100-125mm Three-Point Internal Micrometer Digital, Hardened Measuring Faces, Supplied in Case - Metav IndustryLine

Take advantage of a compact three‑point measuring system combined with a digital readout and robust construction to ensure repeatable internal measurements for workshop and quality‑control tasks. The instrument delivers fine resolution for detailed inspection and can be ordered directly via Metav Werkzeuge or discussed with Metav consultants for specification matching.

Three‑point internal micrometer M312.256 — digital inside micrometer, 100–125 mm range (Metav IndustryLine)

The Three‑point internal micrometer M312.256 is a digital inside micrometer designed for accurate internal diameter measurement in machine construction, toolmaking and inspection environments.

• Digital display with mm/inch function
• High resolution: 0.001 mm reading
• Measuring range 100–125 mm
• Hardened measuring faces for durability

Precise measurement performance for quality control

The three‑point measuring concept provides a stable contact geometry that centres automatically in bores, enabling repeatable results across multiple measurements. With a resolution of 0.001 mm and a stated accuracy of ±0.006 mm, this digital inside micrometer (M312.256) suits standard workshop and inspection tasks where traceable, fine measurement is required. The electronic display supports ABS and PRESET functions, which reduce manual interpolation and speed up serial checks; the result is fewer transcription errors and a smoother inspection workflow.

Durable design to withstand daily workshop use

Constructed for regular use in industrial settings, the instrument features hardened measuring faces to resist wear and maintain measurement integrity over time. A measuring depth of 140 mm allows access to deeper bores and internal features, while the solid build contributes to stable handling and consistent contact force. The tool is supplied without a setting ring; this makes it simple to integrate into existing calibration routines or to use with customer‑specific references. Where robustness matters, the design reduces rework and supports long‑term repeatability.

Integrated readout and data transfer for process efficiency

The electronic readout offers ON/0, mm/inch, ABS, PRESET and HOLD functions for flexible operation in mixed workflows. The unit includes an RB 4 data output, enabling connection to data collection systems or inspection software for documentation and SPC workflows. By combining a clear digital display with straightforward data export, the instrument helps shorten measurement cycles and supports rational decision‑making in quality control. For technical integration or advice on connecting the output to measurement systems, Metav Werkzeuge’s advisors are available to assist.

Choose Metav IndustryLine’s three‑point internal micrometer for reliable in‑house inspection and process integration; contact Metav Werkzeuge for tailored advice and ordering at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: M312.256
• GTIN: 4054469119984
• Customs tariff number: 90173000

Core specifications

• Measuring range: 100–125 mm
• Resolution (reading): 0.001 mm
• Accuracy: ±0.006 mm
• Measuring depth: 140 mm
• Weight: 2.6 kg

Features

• Digital display: ON/0-, mm/inch-, ABS-, PRESET- and HOLD‑button functions
• Data output: RB 4
• Hardened measuring faces
• Delivered without setting ring

FAQ

What measuring range does this inside micrometer cover?
The measuring range is 100–125 mm; the instrument is intended for internal diameter measurement within this span and is classified for standard workshop use.

What resolution and accuracy can be expected?
Resolution is 0.001 mm with an overall accuracy of approximately ±0.006 mm, which supports precise shop‑floor inspection and routine quality checks.

Is the device suitable for deep bore measurements?
Yes, the measuring depth of 140 mm permits access to deeper internal features and larger bore depths typical in general mechanical engineering.

Which digital functions and interfaces are available?
The readout provides ON/0, mm/inch, ABS, PRESET and HOLD functions and an RB 4 data output for connection to data capture systems or inspection software.

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