40-50mm Three-Point Internal Micrometer With Setting Ring And Extension, Calibrated, Supplied In Case - Metav IndustryLine

Take advantage of the combination of high repeatability, a 40–50 mm measuring range and 0.005 mm accuracy for reliable internal measurements of blind holes; order the instrument directly via Metav Werkzeuge or contact the consultants for application advice.

Three-point internal micrometer — precise internal measurement, 40–50 mm, 0.005 mm accuracy (Metav IndustryLine)

The three-point internal micrometer is a compact precision instrument for measuring internal diameters, designed for blind-hole applications and workshop use.

• 40–50 mm measuring range
• 0.005 mm measurement accuracy
• Matt chrome scale and vernier
• Delivered with setting ring and extension

Precision where centring matters

The three-point contact mechanism provides a stable, self-centring measurement that reduces positioning errors and improves repeatability. With a 40–50 mm span and a rated 0.005 mm accuracy, this analogue gauge is suited to demanding inspection tasks where internal geometry must be verified rather than estimated. The instrument’s matt chrome scale and vernier improve legibility under workshop lighting, while robust measuring faces ensure consistent contact geometry. These characteristics translate into fewer rework cycles and clearer quality decisions on the shop floor.

Purpose and workshop advantages

Classified in the micro-range (max. 10–100 mm), this micrometer covers fine mechanical applications such as small-bore components, precision fixtures and assembly parts. The three-point layout is especially effective for blind-hole measurement, as the expanding anvils locate the bore axis before the final reading is taken. Supplied with a setting ring and extension (150 × Ø16.7), the instrument adapts to stepped or recessed bores without improvised jigs. For production environments that value throughput and traceable checks, the combination of compact reach and high resolution supports faster go/no-go decisions and simplifies in-process control.

Handling, robustness and supplier assurance

Constructed with a matt-chrome finished scale and vernier, the instrument balances corrosion resistance with visual clarity. The presence of defined measuring faces and a solid build (approximate weight 2.7 kg) gives a reassuring tactile feel during measurement, particularly when handling small internal diameters. Delivered in a protective case, the gauge is ready for transport between inspection benches or machines. As part of the Metav IndustryLine, this tool benefits from the supplier’s commitment to democratising precision: a broad product range, dependable logistics from Emmerich and a reputation for consistent quality across industrial and craft sectors.

Discuss application specifics with Metav Werkzeuge to ensure the Metav IndustryLine three-point internal micrometer (M312.138.P) matches production needs and to request a tailored quotation

Technical data

• Article number: M312.138.P
• GTIN: 4054469158679
• Brand: Metav IndustryLine
• Type: Three-point internal micrometer
• Analog instrument

Core measurements

• Measuring range: 40–50 mm
• Resolution / reading increment: 0.005 mm
• Length: 90 mm
• Weight: 2.7 kg
• Extension: 150 × Ø16.7
• Setting ring: 40

Special features

• Suitable for blind-hole bores
• Matt chrome scale and vernier
• Measuring faces present
• Delivered with setting ring and extension
• Supplied in protective case
• eCl@ss: 21170335
• ETIM: EC003590
• Tariff code: 90173000

FAQ

What measuring range does the instrument cover?
The Metav IndustryLine three-point internal micrometer (M312.138.P) covers the 40–50 mm measuring range.

What accuracy can be expected from this analogue gauge?
The instrument provides a measurement accuracy of 0.005 mm, suitable for fine internal inspections.

Is this micrometer suitable for blind-hole measurements?
Yes — the three expanding anvils and the instrument design are specifically intended for reliable blind-hole measurement.

Which accessories are included with delivery?
Delivery includes a setting ring and the extension (150 × Ø16.7) and the tool is supplied in a protective case.

How is the scale finished and what is the instrument’s weight?
The scale and vernier are matt chrome plated for durability and legibility; the instrument weighs approximately 2.7 kg.

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