50 mg Precision Calibrator Weight Wire Form E1 Tolerance 0.004 mg Stainless Steel, Polished - KERN

Take advantage of a robust, natural-wood storage solution that combines compact protection with clear organisation for small laboratory masses; order the wooden case directly via Metav Werkzeuge or consult our specialists for matching storage options. KERN Wooden Case 338-090-200 — for individual precision weights, unpadded A sturdy KERN wooden case designed to store individual precision weights for calibration, inspection and controlled transport in laboratories and workshops Natural wood construction, durable finish Designed for single weights, button/compact form Fits nominal values from 1 mg to 500 mg Lightweight transport case, compact footprint Secure storage that preserves measurement integrity The wooden case provides a reliable housing for precision weights, keeping each piece separated and accessible. Its unpadded layout reduces the risk of contamination that can occur when fibres from linings migrate onto mass standards; at the same time the snug compartments prevent lateral movement, lowering abrasion and measurement drift during handling. The natural-wood shell offers dimensional stability and a tactile, professional finish that supports repeatable calibration procedures. Practical compatibility for calibration and quality control Designed for single, button-style or compact weights, the case accommodates nominal values between 1 mg and 500 mg, making it suitable for small-mass work in calibration labs and quality assurance. Clear organisation of individual slots accelerates inventory checks and instrument set-up, reducing downtime during verification tasks. The simple internal layout also facilitates routine cleanliness checks and makes it straightforward to pair weights with calibration reports or tare lists. Durable materials and straightforward handling Constructed from responsibly sourced natural wood, the case balances low weight with robust protection for small masses. The unpadded interior is intentionally chosen for applications where lint-free storage is preferred; this supports traceable mass handling and reduces the need for frequent re-cleaning of weights. The compact footprint and light overall weight simplify storage on workshop trolleys or inside cabinet drawers while maintaining immediate access to critical measurement standards. For secure storage and fast supply from Emmerich, contact Metav Werkzeuge to request the KERN wooden case 338-090-200 or ask for advice at info@metav-werkzeuge.com or by phone on +49 2822 7131930 Technical data Article number: 338 SKU: 338-090-200 Manufacturer: KERN Material: Wood Unpadded interior Fits nominal values 1 mg – 500 mg (single) GTIN: 4045761007291 Facts Net weight: 0.13 kg Customs tariff (CN): 84239090 eCl@ss: 21100103 Origin: DE Special features For individual weights (button / compact) Product category: Test weights / Cases Category path: Scales › Test weights Unpadded design for lint-free storage Lightweight, compact footprint for easy storage FAQ Is this case suitable for button or compact weights? Yes. The KERN wooden case 338-090-200 is designed specifically for single button/compact weights and organises them for quick access during calibration. Can the case accommodate weights down to 1 mg? The case fits nominal values from 1 mg up to 500 mg, making it suitable for small-mass sets used in fine measurement tasks. Does the interior include cushioning to protect delicate masses? The interior is unpadded by design; this supports lint-free storage and simplifies cleanliness control for precision masses. Who supplies this case and where is it shipped from? Metav Werkzeuge supplies the KERN wooden case 338-090-200 and ships from Emmerich am Rhein with transparent order processing for workshop and industry clients. Metav Werkzeuge, Emmerich am Rhein, Germany — info@metav-werkzeuge.com — +49 2822 7131930

Benefit from robust plastic construction, compatibility with single nominal values 1 mg–500 mg and secure organisation for calibration weights of classes E1–M2, ensuring reliable storage and easy handling. Order the case directly via Metav Werkzeuge or ask our consultants if needed. KERN 347-009-400 Plastic Case for Single Calibration Weights – for 1 mg–500 mg, E1–M2 The KERN 347-009-400 is a compact plastic case designed to protect and organise single calibration weights for laboratories, service engineers and workshop calibration tasks. Compact plastic case for calibration weights Fits single weights from 1 mg to 500 mg Compatible with classes E1 to M2 Lightweight at approx. 0.02 kg Protects precision weights during storage and transport The case provides secure storage for individual calibration weights, reducing the risk of contamination and handling damage that can alter mass values. The internal layout is adapted for button/compact designs commonly used in calibration sets; this keeps each weight separated and stable during transport. By using a dedicated enclosure made from durable plastic, routine handling becomes more predictable and safer for sensitive measurement artefacts. Ensures compatibility with recognised accuracy classes Designed for nominal values from 1 mg–500 mg, the enclosure supports weights used across common accuracy classes E1–M2, which makes it suitable for laboratory checks and field calibration. For readers less familiar with classes: E1 and M2 denote standardised tolerance ranges used in legal and laboratory metrology; storing weights in the correct case helps maintain traceability and reduces the chance of cross-contamination that could compromise conformity checks. Lightweight, compact design for efficient workflow At roughly 0.02 kg, the case contributes negligible additional mass while offering a compact footprint for bench or toolbox storage. The plastic construction balances low weight with sufficient rigidity to protect contents, enabling technicians to carry sets between site visits without bulky packaging. The space-saving profile also assists in organised inventory management, simplifying quick selection and return of individual weights during calibration routines. Practical benefits for workshops and calibration services For calibration laboratories, service teams and quality departments, a purpose-built case streamlines handling and reduces downtime caused by misplaced or contaminated weights. The product supports better operational consistency by keeping single calibration weights in order and immediately accessible, which translates into fewer interruptions during measurement tasks and a smoother calibration workflow. Contact Metav Werkzeuge for delivery from Emmerich, tailored advice or technical clarification via info@metav-werkzeuge.com or call +49 2822 7131930 Technical Data Article number: 347 SKU: 347-009-400 GTIN: 4045761008625 Manufacturer: KERN Facts Weight: 0.02 kg Nominal values: 1 mg–500 mg HS code: 84239090 Special features Material: Plastic For: single calibration weights (button/compact) Class compatibility: E1–M2 Country of origin: DE FAQ Which nominal values fit in this case? The KERN 347-009-400 accommodates single weights with nominal values from 1 mg to 500 mg. Is the case suitable for weights with button or compact form? Yes, the enclosure is intended for button/compact designs and keeps each single weight separated for safe storage. Which accuracy classes are compatible with the case? The case is compatible with weights in accuracy classes E1 to M2 and is suitable for laboratory and workshop use. What material is the case made from and how heavy is it? The case is constructed from plastic and weighs approximately 0.02 kg, offering a lightweight yet protective solution. Manufacturer: KERN, Address: Germany, Contact: not specified

Take advantage of precise storage, robust protection and a padded interior to keep single metrological weights safe and ready for immediate use; order the case directly via Metav Werkzeuge or ask our consultants for additional specifications Aluminium-protected case 317-009-600 — single-weights storage for 1 mg–500 mg, KERN The Aluminium-protected case is a compact, purpose-built storage solution for single metrological weights, designed for safe handling and routine use in calibration labs and workshops Aluminium-protected housing for robust transport Suitable for single weights 1 mg–500 mg Compatible with classes E1–M3 Padded interior for shock protection Built for secure, standards-compliant storage The aluminium shell provides a rigid outer barrier that protects delicate calibration weights from mechanical stress and contamination. By combining a lightweight aluminium construction with an internal padding system, the case offers mechanical protection and dimensional stability without adding unnecessary bulk. This design keeps single weights organised and protected, ensuring quick access during calibration tasks and reducing the risk of damage that can affect measurement accuracy. Ensures traceability and correct handling for metrology workflows Storage that supports metrological routines contributes directly to reliable results. The case is specified for weights in the range 1 mg–500 mg and for classes E1–M3, which makes it suitable for a wide range of laboratory and industrial calibration scenarios. Separate compartments for individual pieces and the padded interior reduce handling errors and minimise cross-contamination, helping maintain the declared tolerance and prolonging the service life of precision weights. Practical benefits that support everyday work in the workshop Lightweight and compact, the case simplifies logistics in environments where secure transport and secure storage are required. The rigid aluminium exterior resists deformation during routine movement, while the internal padding cushions delicate surfaces. This combination reduces downtime caused by damaged weights and supports efficient workflows in quality control and inspection routines, contributing to predictable throughput and fewer interruptions. Contact Metav Werkzeuge today to discuss the KERN aluminium-protected case 317-009-600 and secure a reliable storage solution for precision weights — email info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 317-009-600 Manufacturer: KERN SKU: 317-009-600 GTIN: 4045761223592 Facts Weight range: 1 mg–500 mg Suitable classes: E1–M3 Net weight: 0.3 kg HS code: 84239090 Origin: CN Special features Material: Aluminium Interior: padded Product group: aluminium-protected cases for single weights Product category: test weights / cases FAQ Is the case suitable for single weights from 1 mg to 500 mg? The aluminium-protected case 317-009-600 is specified for single weights in the range 1 mg–500 mg and supports organised storage for that range. Which weight classes can be stored in this case? This case is compatible with weights of classes E1–M3, making it suitable for a variety of calibration and inspection tasks requiring high accuracy. Does the interior protect against shock and abrasion? The interior of the KERN aluminium-protected case features padding that cushions weights and reduces the risk of mechanical damage and surface abrasion during transport and handling. Can the case be used for routine transport between sites? The rigid aluminium housing and padded interior of the 317-009-600 provide robust protection suitable for routine transport within laboratory and workshop environments. KERN — Origin: China; Contact: Metav Werkzeuge, Emmerich — eMail: info@metav-werkzeuge.com, Phone: +49 2822 7131930

Accurate handling of small calibration masses is achieved through the combination of stainless-steel construction, high-quality plastic tips and a practical 136 mm length; order the KERN 315-247 tweezers directly via Metav Werkzeuge or consult our product specialists for application advice. KERN 315-247 — Calibration tweezers with straight plastic tips A KERN 315-247 tweezers designed for secure, non-marking handling of small calibration weights in metrology and workshop environments. Straight stainless-steel tips for secure grip High-quality plastic tips to protect weights 136 mm length for precise, ergonomic handling Secure handling for exact calibration results For precision tasks, secure handling is essential. The instrument offers a controlled grip on calibration masses up to ≤ 5 g, compatible with classes E1–M3, which helps reduce handling errors and improves repeatability in weighing procedures. Constructed to meet the demands of metrology, the tool supports consistent measurement routines and minimises the risk of surface contact that could alter a weight’s value. By using a purpose-made tweezer rather than fingers, the chance of contamination and thermal transfer is lowered, contributing to more reliable results in daily quality checks. Durable build with gentle contact to sensitive masses A corrosion-resistant body delivers long service life while the high-quality plastic tips preserve delicate surfaces. The combination of stainless steel strength and soft tip protection ensures that fine calibration weights are neither scratched nor displaced during handling. The straight tip geometry provides direct visual control when picking up minute masses, and the construction requires minimal maintenance. This balance of durability and gentle contact supports both routine laboratory work and demanding workshop environments where component care matters. Practical design to streamline laboratory and workshop workflows Measuring 136 mm in length and weighing about 0.02 kg, the tweezers are optimised for comfortable, precise handling throughout repetitive tasks. The tool’s length offers ergonomic reach without compromising manoeuvrability at the balance pan, enabling steady placement and removal of weights during calibration cycles. Designed for integration into existing metrology workflows, the device supports standard operating procedures and helps technicians maintain efficient throughput while preserving measurement integrity. For further clarification on application limits or compatibility with specific test procedures, Metav’s consultants can advise on best practice. For supply and technical guidance on the KERN 315-247 tweezers, contact Metav Werkzeuge in Emmerich — email info@metav-werkzeuge.com or phone +49 2822 7131930 Technical data SKU: 315-247 Manufacturer: KERN GTIN: 4045761222922 Specifications Length: 136 mm Weight: 0.02 kg Suitable for weights: ≤ 5 g (classes E1–M3) Features Material: stainless steel with high-quality plastic tips Tip design: straight tips FAQ Which calibration weight classes can be handled with these tweezers? The tweezers are suitable for calibration masses up to ≤ 5 g and compatible with classes E1–M3, making them appropriate for fine-weight handling in precision weighing tasks. Are the plastic tips safe for delicate weight surfaces? Yes, the high-quality plastic tips are designed to protect sensitive surfaces and reduce the risk of scratching or marking during handling of calibration weights. What are the dimensions and mass of the tweezers? The tweezers measure 136 mm in length and have an approximate mass of 0.02 kg, providing a balance of reach and lightness for repeated use. Is this tool suitable for routine laboratory workflows? The design supports routine metrology and workshop workflows by offering ergonomic handling, controlled grip and surface protection, which together help maintain measurement consistency. Who supplies the product and where can further technical advice be obtained? The product is supplied by KERN (SKU 315-247); for application-specific advice and supply options, Metav Werkzeuge can provide consultancy and ordering information. KERN

Take advantage of a lightweight, polyamide handling tool that ensures a secure grip on small calibration weights up to 200 g; its 100 mm length combines fine control with easy handling for routine calibration tasks. Order directly via Metav Werkzeuge or consult our specialists for matching accessories and delivery from Emmerich. KERN 315-242 Tweezer (Polyamide, 100 mm) KERN 315-242 is a precision plastic tweezer for secure handling of small calibration weights in laboratories and workshops Secure grip for small calibration weights Suitable for weights E1–M3, 1 mg–200 g 100 mm length for precise handling Polyamide construction, lightweight 10 g Precision handling reduces contamination and measurement error The compact design provides a controlled hold when placing and removing calibration masses, helping to preserve the integrity of sensitive components. Made from polyamide, the instrument is gentle on metallic and plated surfaces and reduces risk of scratching or marking. The compatibility with 1 mg–200 g weights across E1–M3 classes means the tool supports a wide range of calibration workflows, supplying consistent handling where repeatability matters. Built for routine use, the tweezer contributes to faster setup times and fewer handling-related deviations. Comfortable length and light weight for repetitive tasks At 100 mm, the geometry balances reach and tactile feedback to enable precise positioning without overextension of the hand. The construction results in a lightweight tool — approximately 10 g — that decreases operator fatigue during repeated handling. The slim tips facilitate access to small masses and narrow pans, while the overall form factor supports careful handling during calibration runs. Clear, repeatable manipulation of weights improves throughput and aids adherence to internal quality procedures. Durable, easy-care design for laboratory and workshop environments The choice of high-quality plastic provides a durable and easy to clean solution suitable for environments where metal tweezers could risk scratching or produce magnetic influence. Maintenance is straightforward: wipe clean and store in a dry place to maintain tip alignment and performance. The tool's simple construction minimises service requirements and offers a dependable adjunct to balances, scales and precision measuring equipment in both calibration laboratories and industrial workshops. Contact Metav Werkzeuge today for tailored advice and supply of the KERN 315-242 tweezer; our Emmerich-based team can confirm suitability for specific calibration setups and arrange prompt delivery via the central European warehouse (info@metav-werkzeuge.com | +49 2822 7131930 | WhatsApp +49 170 2837271) Technical data Article number: 315 SKU: 315-242 Manufacturer: KERN GTIN: 4045761003439 Material: Polyamide (plastic) Facts Length: 100 mm Weight: 0.01 kg Suitable weight range: 1 mg–200 g Special features Secure grip for small calibration weights Suitable for weight classes E1–M3 Lightweight construction for reduced operator fatigue Simple cleaning and low maintenance FAQ What weight range is compatible with these tweezers? The KERN 315-242 tweezer is suitable for handling calibration weights from 1 mg up to 200 g. Which weight classes can be handled safely with this tool? This tweezer supports weights across classes E1 to M3, making it appropriate for a broad range of calibration tasks. Is the material safe for delicate or plated masses? Yes, the polyamide construction of the KERN 315-242 is designed to be gentle on delicate and plated surfaces, helping to avoid scratches. How should the tweezer be maintained to ensure longevity? Routine care for the KERN 315-242 involves simple cleaning with a soft cloth and storage in a dry place to preserve tip alignment and performance. Can this tool be used in both laboratory and workshop environments? The lightweight, easy-care design of the KERN 315-242 makes it suitable for calibration benches in laboratories as well as workshop settings where precise handling is required. Metav Werkzeuge, Emmerich am Rhein, Germany — Email: info@metav-werkzeuge.com — Tel: +49 2822 7131930 — WhatsApp: +49 170 2837271

Take advantage of a simple, reliable accessory that keeps calibration masses free from dust while preserving accuracy and prolonging service life. The combination of gentle bristles, low weight and practical handling ensures efficient routine maintenance of scales and weights. Order the KERN brush directly via Metav Werkzeuge or consult our advisors for further details. KERN 318-270 Dust Brush — compact brush for gentle cleaning of calibration weights The KERN 318-270 dust brush is a lightweight accessory designed to remove dust and particles from calibration weights and weighing surfaces in laboratories and workshops. Soft bristles for gentle cleaning Designed for calibration weights Lightweight and easy to handle Preserve measurement accuracy with gentle, targeted cleaning Regular cleaning of calibration masses prevents contamination that can alter mass values and affect the repeatability of results. The compact brush offers gentle bristles that remove dust without abrading surfaces or leaving residues, helping to maintain the precision of weights used in verification and calibration. For technicians and workshop teams, this reduces the frequency of recalibration and supports consistent measurement quality across production and quality-assurance processes. Practical handling for routine maintenance and quick interventions The accessory is intentionally lightweight and easy to manoeuvre during daily maintenance tasks, enabling swift removal of particles from weight stacks and pans without disassembly. Ergonomic handling minimises the risk of accidental knocks or slips near sensitive balances, while the brush design supports access to small grooves and recessed areas. This results in faster cleaning cycles and less downtime, contributing to a more efficient workflow in busy metrology environments. Reliability in supply and fit for professional environments The brush is supplied by a recognised manufacturer for weighing technology and suits workshops, service departments and calibration laboratories that require straightforward maintenance tools. Paired with Metav Werkzeuge’s role as a dependable distributor, this accessory supports a transparent supply chain and practical on-bench readiness. Investing in simple, purpose-built maintenance tools safeguards the performance of weighing equipment and complements broader quality-management measures. Contact Metav Werkzeuge to procure the KERN 318-270 dust brush for dependable maintenance of calibration weights or to request additional technical information Technical data Article number: 318 SKU: 318-270 Manufacturer: KERN GTIN: 4045761004146 Facts Weight: 0.01 kg Eclass: 21041109 Special features Suitable for cleaning calibration weights Rapid dispatch available via distributor FAQ How does this brush protect calibration accuracy? The brush removes dust and particles that can adhere to masses; using the KERN 318-270 dust brush helps maintain the declared mass values and stable measurement results. Is the brush suitable for all types of laboratory weights? The brush is intended for routine cleaning of calibration weights and standard weighing pans; compatibility with specialised mass geometries should be assessed case by case. Can the brush be used on balance pans without causing damage? Yes, the soft bristles are designed for gentle cleaning and avoid abrasive contact that could harm pans or plated surfaces. Manufacturer: KERN — Address: not specified — Contact: not specified

Take advantage of secure handling of small calibration weights, robust stainless steel construction and a compact 105 mm length for precise control; order the tweezers directly via Metav Werkzeuge or contact our consultants for application advice. Pinzette 315-243 — Precision tweezers by KERN, stainless steel, 105 mm The Pinzette 315-243 is a precision tweezer designed for the secure handling of small calibration weights in laboratories and workshop environments. Secure grip for micro calibration weights Stainless steel construction Length 105 mm for fine control Suitable for 1 mg – 200 g (E1 – M3) Secure handling for trace and routine calibration tasks The compact design delivers a secure grip for very small test weights, reducing the risk of slippage and accidental contact. Its dimensions, including the 105 mm length, allow for controlled, repeatable handling that supports efficient calibration workflows. This contributes to fewer handling errors and a more consistent weighing routine when working with weights from 1 mg – 200 g. Durable construction that keeps processes dependable Manufactured in stainless steel, the tool combines durability with low maintenance, ensuring longevity in daily metrology use. The robust construction helps maintain geometric stability and handling precision under repeated use, which supports reliable measurement results and reduces downtime for replacements. The design suits both laboratory benches and on-site calibration setups where space and dexterity matter. Practical compatibility and metrology clarity Designed for compatibility with standard calibration classifications, the tweezers are suitable for weights in classes E1 – M3, covering high-accuracy laboratory weights as well as routine workshop standards. For users less familiar with weight classes: these designations indicate recognised accuracy ranges used by calibration professionals and metrology services, ensuring the tool is appropriate for precise, standard-compliant handling. Confidence through expert supply and service Sourcing tools from a trusted partner simplifies procurement and post-sale support. Metav Werkzeuge stands for democratisation of precision, offering an extensive range of metrology supplies from its base in Emmerich. With a broad catalogue and a long-standing customer base, the emphasis is on dependable availability and a clear supply chain that supports uninterrupted calibration operations. Contact Metav Werkzeuge for tailored advice on the KERN 315-243 tweezers and to confirm suitability for specific weight classes — email info@metav-werkzeuge.com or call +49 2822 7131930 for fast guidance from our Emmerich team Technical data Article number: 315 SKU: 315-243 Manufacturer: KERN GTIN: 4045761067615 Length: 105 mm Net weight: 0.02 kg Facts Suitable weight range: 1 mg – 200 g Applicable weight classes: E1 – M3 Material: Stainless steel Special features Secure gripping geometry for small calibration weights Compact format for precise handling and repeatability Designed for laboratory and workshop use Rapid dispatch and broad metrology assortment available from supplier FAQ How small a weight can be handled with these tweezers? The Pinzette 315-243 from KERN is suitable for handling weights from 1 mg up to 200 g, covering the usual micro and small calibration weights used in precise weighing tasks. What material is the tool made from and why does that matter? The tweezers are made from stainless steel, giving corrosion resistance and dimensional stability that support consistent handling and long service life in metrology environments. Are these tweezers suitable for laboratory-grade calibration weights? Yes, the KERN 315-243 is specified for weights in classes E1 – M3, which includes high-accuracy laboratory weights as well as standard workshop classes, making it appropriate for professional calibration work. What are the physical dimensions and weight of the tweezers? The tweezers measure 105 mm in length and have a net weight of 0.02 kg, offering a compact tool that balances control with minimal contact force. Metav Werkzeuge, Emmerich am Rhein, Email: info@metav-werkzeuge.com, Tel: +49 2822 7131930