175-200mm Three-Point Internal Measuring Tool for Blind Holes, Carbide Measuring Faces, Depth 140mm, Ratchet, Supplied in Case - Metav IndustryLine

Taking advantage of robust three-point measurement, carbide contact faces and a repeatable ratchet stop, this micrometer delivers consistent internal readings across its 175–200 mm range; order the instrument directly via Metav Werkzeuge or consult Metav’s specialists for selection advice.

Three-point internal micrometer M312.149.S — 175–200 mm range with carbide faces

A three-point internal micrometer for precise measurement of blind bores and large internal diameters in workshop and inspection environments.

• Three-point internal measurement
• 175–200 mm measuring range
• Carbide measuring faces for wear resistance
• Ratchet stop for reproducible contact

Precise internal measurement for blind bores

The three-point design delivers stable contact around the circumference, making the instrument particularly suited to blind-hole measurement where axial access is limited. Classified as a standard workshop micrometer (maximum range up to 300 mm), this instrument combines reach and rigidity for routine machine‑shop and quality‑control tasks. The 175–200 mm range and measuring depth 140 mm ensure access to deeper bores while preserving measurement stability. The device is specified for use on blind holes and large internal diameters encountered in components and fixtures.

Accuracy and handling for consistent results

Mechanical reading capability is paired with a fine scale and vernier, giving a reading step of 0.005 mm and a stated accuracy of 0.007 mm, which positions the tool toward higher mechanical precision within its class. A ratchet stop provides uniform contact force, reducing variation caused by operator pressure and improving repeatability. The carbide measuring faces resist wear when used against typical engineering materials, and the matt‑chromed scale and vernier aid legibility in workshop lighting. The instrument’s mass (approximately 3.7 kg) contributes to stability during measurement cycles.

Workshop integration and practical delivery

This analogue, three‑point internal micrometer integrates into standard inspection workflows: it is an analogue precision instrument designed for straightforward use in production and QA environments. Delivery is made without a setting ring, enabling buyers to select a calibrated ring suited to their reference standards. The instrument supports typical measuring tasks in machining and fixtures, while Metav’s position as a precision partner offers assurance through a broad portfolio and decades of distribution experience. The tool is supplied ready for workshop use with clear specifications for integration into inspection routines.

Contact Metav Werkzeuge to discuss how the M312.149.S meets specific inspection needs or to request ordering and accessory options through Metav Werkzeuge's sales team

Technical data

• Article number: M312.149.S
• GTIN: 4054469158716
• Label: Dreipunkt-Innenmess, 175 - 200 mm, Sackloch mit HM‑Messflächen; ohne Einstellring
• Manufacturer: Metav IndustryLine
• Tariff number: 90173000

Key figures

• Measuring range: 175–200 mm
• Measuring depth: 140 mm
• Accuracy: 0.007 mm
• Reading: 0.005 mm
• Weight: 3.7 kg
• Type: Analogue (mechanical)

Features and materials

• Carbide (HM) measuring faces
• Matt‑chromed scale and vernier
• Ratchet stop for reproducible contact
• Delivery without setting ring
• Suited for blind‑hole measurement

FAQ

Is this instrument suitable for measuring blind bores?
Yes. The M312.149.S is specifically configured for blind‑hole measurement, its three‑point contact ensuring reliable engagement inside blind bores.

What reading and accuracy can be expected from the instrument?
The instrument offers a reading increment of 0.005 mm and a stated accuracy of 0.007 mm, suitable for precise workshop inspection tasks.

Are the measuring faces durable for repeated use?
Yes. The micrometer has carbide measuring faces, which provide enhanced wear resistance for use on typical engineering materials.

Is a setting ring supplied with the micrometer?
No. The delivery is without a setting ring, allowing selection of a reference ring that matches the calibration procedure or in‑house standards.

Which workshop category does this tool belong to?
This micrometer is a standard workshop instrument (measuring range within 100–300 mm), offering a balance of reach and stiffness for machine‑shop and quality‑control applications.

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