150–175mm Three-Point Internal Micrometer For Blind Holes With Carbide Measuring Faces, Ratchet, Supplied In Case - Metav IndustryLine

Take advantage of the combination of a three-point measuring system, carbide measuring faces and a robust ratchet stop for reliable blind-hole measurements in production environments. Order the instrument directly via Metav Werkzeuge or consult our specialists for specification support.

Three-point inside micrometer M312.148.S — 150–175 mm range, carbide measuring faces (Metav IndustryLine)

The Three-point inside micrometer M312.148.S is an analogue internal measuring instrument designed for precise measurement of blind holes in machine and toolmaking applications, providing dependable readings across the 150–175 mm range.

• Three-point system for blind-hole measurement
• Carbide measuring faces for wear resistance
• Ratchet stop for consistent measuring force
• Analogue scale, accuracy 0.007 mm

Accurate blind-hole measurement with a three-point system

The three-point measuring mechanism ensures that contact across the diameter is evenly distributed, which stabilises the gauge during measurement and reduces centring errors common with two-point designs. Combined with carbide measuring faces, the device retains its geometry under repetitive use, providing a consistent 0.007 mm accuracy that supports tight production tolerances. This setup is particularly effective for internal diameters where access is limited and where repeatable positioning is essential for process control.

Built for workshop conditions and repeatable results

A hardened, matt-chrome plated scale and vernier deliver a clear analogue reading that avoids electronic sensitivity in harsh environments; the incorporated ratchet stop enforces a uniform measuring force to reduce operator-induced deviation. The instrument’s measuring depth of 140 mm allows access into deeper blind holes while the solid construction balances rigidity and handling for everyday shop-floor use. The absence of an adjustment ring is noted in the scope of delivery and should be considered when planning calibration or ring-based comparators.

Practical benefits and typical applications

Classified within the standard range for internal gauges, this three-point micrometer is suitable for workshop and production settings in general engineering, toolmaking and quality control where internal diameters between 150 and 175 mm are common. The analogue design demands minimal maintenance and excels where electromagnetic interference or battery dependence are concerns. Delivered without an adjustment ring, the instrument is nonetheless ready for immediate integration into routine inspection tasks and is ideal for repeat checks on blind-hole bores in components and fixtures.

For dependable blind-hole measurement in the workshop, choose the Metav IndustryLine three-point inside micrometer and contact Metav Werkzeuge for order and specification assistance at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: M312.148.S
• GTIN: 4054469158709
• ECLASS: 21170335
• ETIM: EC003590
• Tariff number: 90173000

Numbers / Core technical data

• Measuring range: 150–175 mm
• Accuracy: 0.007 mm
• Measuring depth: 140 mm
• Weight: 3.5 kg
• Reading type: analogue

Design / Special features

• Three-point measuring system
• Carbide measuring faces (HM)
• Ratchet stop
• Delivery without adjustment ring
• Scale and vernier matt chrome-plated
• Designed for blind-hole (sackloch) measurement

FAQ

How does the three-point system improve blind-hole measurements?
The three-point arrangement of the M312.148.S centres itself in the bore and produces a stable contact condition, improving repeatability for blind-hole diameters compared with two-point gauges.

Is the instrument suitable for shop-floor use in production?
Yes, the Metav IndustryLine three-point inside micrometer is built for workshop conditions: its matt-chrome scale, ratchet stop and carbide measuring faces make it robust for regular use in production inspections.

Does the delivery include an adjustment ring or calibration certificate?
The delivery of the M312.148.S is specified without an adjustment ring; calibration certificates are not stated in the product data, so calibration arrangements should be verified with Metav Werkzeuge if required.

What depth of blind-hole can be measured reliably?
The instrument provides a measuring depth of 140 mm, enabling access to fairly deep blind holes within the specified 150–175 mm measuring range.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com