200–225 mm Three-Point Internal Micrometer With Carbide Measuring Faces, Ratchet, Supplied In Case - Metav IndustryLine

Benefit from precise, repeatable internal measurements across the 200–225 mm range thanks to the combination of three-point centring and a ratchet stop; the matt‑chrome scale and carbide measuring faces ensure durable, low-maintenance use in production and inspection. Order the instrument via Metav Werkzeuge or consult our specialists for application advice.

Three-point internal micrometer M312.150 — 200–225 mm, carbide measuring faces (Metav IndustryLine)

A robust three-point internal micrometer M312.150 designed for accurate internal diameter checks in the 200–225 mm range, suited to workshop inspection and quality control tasks

• Three-point centring for stable internal contact
• Carbide measuring faces for long wear life
• Ratchet stop for consistent measuring force
• Matt‑chrome scale and vernier for clear reading

Repeatable internal diameters with three-point centring

The three‑point contact arrangement provides stable seating against bore surfaces, reducing measuring variation caused by tilt or misalignment. Combined with the 200–225 mm measurement span, this design delivers repeatable internal diameter checks on medium‑sized components, making the tool suitable for batch inspection or set‑up control. The instrument’s construction focuses on consistent contact geometry, which directly reduces rework and speeds up quality decisions.

Durable contact surfaces and controlled measuring force

Wear resistance is ensured by carbide measuring faces, which keep measuring geometry intact even under frequent use. The integrated ratchet stop enforces a uniform measuring force, eliminating a common source of operator error and improving consistency between readings. Together these features support higher throughput with fewer rejects, since each measurement is taken under the same mechanical conditions and with long‑term dimensional stability.

Clear scales and practical handling for workshop use

A matt‑chrome scale and vernier improves contrast under shop lighting and resists reflection, aiding fast reading of the nonius. With a fine reading 0.005 mm and accuracy ±0.008 mm, the instrument bridges the gap between routine workshop control and high‑precision verification. The design includes a deep measuring capability—measuring depth 140 mm—so inner features and deeper bores can be accessed without auxiliary extensions.

Supply, set‑up and workshop integration

The micrometer is supplied ready for workshop use in a transport case and is delivered without a setting ring; this should be considered when integrating into a calibration routine or fixed inspection station. The analogue format with vernier is straightforward to use where digital outputs are not required, and the robust material choices keep maintenance cycles short. For customers seeking a balance of durability and measuring fidelity, this instrument supports stable process control across repeated checks.

For dependable large‑bore inspection tasks choose the Metav IndustryLine three‑point internal micrometer; contact Metav Werkzeuge for technical clarification and local stock information at info@metav-werkzeuge.com or call +49 2822 7131930.

Technical Data

• Article number: M312.150
• GTIN: 4054469119564
• ECLASS: 21170335
• ETIM: EC003590

Facts

• Measuring range: 200–225 mm
• Measuring depth: 140 mm
• Reading: 0.005 mm
• Accuracy: 0.008 mm

Special features

• Three‑point internal measuring instrument
• Carbide measuring faces (HM)
• Ratchet stop
• Scale and vernier matt‑chrome plated
• Supplied in transport case
• Delivery without setting ring
• Analogue (nonius) instrument

FAQ

What applications is this three‑point internal micrometer suitable for?
The three‑point arrangement and M312.150 range make it well suited to internal diameter checks on medium‑sized components in workshop inspection and fixture set‑up tasks.

Does the instrument come calibrated?
The standard delivery does not include an ISO 17025 calibration certificate; the M312.150 is supplied ready for use and should be checked against a setting ring or master gauge as required for quality assurance routines.

How do the carbide measuring faces affect maintenance intervals?
Carbide faces on the Metav IndustryLine micrometer provide superior wear resistance, extending the intervals between re‑grinding or replacement compared with steel faces.

Is the ratchet stop adjustable or fixed?
The ratchet stop is integrated to provide a consistent measuring force; it is designed to ensure repeatable contact without operator‑dependent variation.

Can this tool be used for deep bores?
With a measuring depth of 140 mm, the instrument accesses relatively deep features within its 200–225 mm range, enabling measurement of internal steps and deep recesses.

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