75-88mm Three-Point Internal Micrometer With Setting Ring And Extension, Calibrated ISO 17025, In Case - Metav IndustryLine

Take advantage of the combination of industrial-grade repeatability, a compact 75–88 mm measuring range and a 0.005 mm reading for reliable internal diameter checks; the three-point measuring principle ensures stable contact even in blind bores, and the tool is supplied with a setting ring and an extension for immediate use – order directly via Metav Werkzeuge or consult our specialists for specification support.

Three-point internal micrometer – 75–88 mm range, 0.005 mm reading (Metav IndustryLine)

The Three-point internal micrometer is a precision instrument designed for accurate measurement of internal diameters, especially in blind holes and restricted access bores within workshop and inspection environments.

• Three-point measuring system for blind holes
• Measurement range 75–88 mm
• Resolution 0.005 mm for repeatable results
• Includes setting ring and extension 150×Ø21.8

Precision where small differences matter

The instrument delivers a 0.005 mm reading and an overall accuracy suited to demanding inspection tasks, making it a dependable choice for quality control and toolroom work. The three-contact measuring head centres itself in the bore, reducing eccentricity and providing a stable reference compared with single-point probes; this equals faster cycle times and fewer re-measurements in serial checks. Classified within the standard range for workshop metrology, the tool balances reach and rigidity for everyday machining and inspection tasks.

Engineered for blind-hole and restricted-access measurement

Designed specifically for blind-hole measurement, the three-point mechanism obtains full circumferential contact inside the bore, which avoids the need to access the far side of a component. The delivery includes a setting ring (Ø87) and an extension 150×Ø21.8, enabling measurement of deeper or recessed bores without improvised fixtures. This configuration reduces handling and fixture time on the shop floor, helping to maintain throughput while preserving measurement quality when space is constrained.

Robust construction for repeatable results

Built for industrial use, the instrument features hardened measuring faces and a matt chrome-plated scale and vernier, which resist wear and ensure legible graduations over long service intervals. The solid build contributes to consistent readings across production batches; recorded weight and length reflect a design aimed at stability rather than featherlight portability, helping to reduce user-induced variation. For applications requiring dependable mechanical performance, this design minimises the variables between successive measurements.

Practical application and workshop integration

This internal micrometer is well suited to machine shops, maintenance departments and inspection benches where blind or recessed bores are encountered regularly. Typical tasks include checking counterbores, stepped bores and blind-hole diameters during incoming inspection or first-off verification. The analogue vernier readout provides tactile feedback familiar to technicians, while the instrument’s geometry simplifies repeat measurement routines without complex electronic set-up. For procurement planning and integration into existing quality workflows, the product aligns with industry expectations for durability and usability.

For shops needing sub‑0.01 mm repeatability, contact Metav Werkzeuge for procurement assistance and specification matching: Metav Werkzeuge GmbH, Parkring 45, 46446 Emmerich, Germany — eMail: info@metav-werkzeuge.com — Tel: +49 2822 7131930

Technical data

• Article number: M312.162.P
• GTIN: 4054469158808
• Customs tariff number: 90173000
• Category: Internal micrometers (Messschrauben)
• Manufacturer: Metav IndustryLine

Facts

• Measuring range: 75–88 mm
• Reading / resolution: 0.005 mm
• Stated accuracy: 0.005 mm
• Length: 90 mm
• Weight: 4.3 kg
• Setting ring: Ø87
• Extension: 150×Ø21.8

Special features

• Three-point measuring system for blind holes
• Hardened measuring faces
• Scale and vernier matt chrome-plated
• Includes setting ring and extension
• Analog vernier instrument
• Suitable for blind-hole bores

FAQ

What measurement range does the micrometer cover?
The Three-point internal micrometer covers a measuring range of 75–88 mm, suitable for many workshop and inspection tasks.

What level of resolution and accuracy is available?
The instrument provides a reading and stated accuracy of 0.005 mm, enabling repeatable checks in medium‑precision metrology.

Is this tool suitable for blind-hole measurement?
Yes, the three-point design is specifically intended for blind-hole bores; the micrometer is supplied with a setting ring and an extension to support recessed measurements.

What materials protect the scale and graduations?
The scale and vernier are matt chrome-plated, chosen to reduce glare and resist wear under workshop conditions.

Can the micrometer be used for depth or stepped measurements?
The geometry supports internal diameter checks including stepped bores; the included extension allows access to deeper features where required.

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