175 mm Setting Ring Form C Hardened Gauge Steel DIN 2250/DIN 286 JS3 - Metav IndustryLine

The combination of hardened, lapped gauge steel and DIN 2250 / DIN 286 JS3 tolerance ensures a stable master reference for setting and calibration tasks; the defined Form C profile supports reproducible seating and quick, repeatable checks. Order the ring directly via Metav Werkzeuge or consult the team for application-specific advice.

Setting ring 175 mm — DIN 2250 master ring, hardened gauge steel (Metav IndustryLine)

Setting ring 175 mm is a precision master ring for calibration, gauge setting and reference measuring in inspection and workshop environments.

• Hardened, lapped gauge steel
• DIN 2250 / DIN 286 tolerance JS3
• 175 mm nominal diameter
• Form C profile for secure seating

Reliable master reference for workshop calibration

A hardened and lapped master ring offers a trustworthy datum for setting internal gauges and comparators. The 175 mm nominal diameter provides a practical reference size for medium bores and toolroom applications while the processed surface minimises contact variability. Using a master ring made from hardened gauge steel reduces wear and preserves gauge integrity over repeated handling, which translates into fewer recalibrations and more consistent measurement routines on the shop floor.

Traceable tolerances and repeatable results

Built to DIN 2250 and verified to DIN 286, JS3, this ring provides clearly defined limits for a master reference, supporting traceable inspection chains and quality documentation. A tight tolerance class such as JS3 means less ambiguity when transferring a standard to portable instruments; in practice this improves the repeatability of successive settings and reduces rework caused by gauge drift. The robust construction aids in maintaining concentricity and form under normal workshop conditions, giving a repeatable seating surface for bore gauges and internal comparators.

Practical benefits in everyday metrology work

The Form C geometry ensures a positive mechanical contact during seating, simplifying the alignment of measuring probes and feeler contacts. The ring’s finish, achieved by lapping, yields a consistent contact plane that helps to avoid measurement artefacts induced by surface roughness. As a durable master reference, it supports routine tasks such as setting dial bore gauges, checking go/no-go mandrels and verifying comparator standards, thereby contributing to a smoother process flow and predictable inspection outcomes.

Contact Metav Werkzeuge for specification matching and to arrange supply of this Metav IndustryLine setting ring; specialists can advise on gauge selection, calibration options and delivery.

Technical data

• Article number: M313.175

• GTIN: 4054469121215

• Tariff number: 90173000

• Diameter: 175 mm

• Weight: 6.8 kg

• Material: gauge steel, hardened and lapped

• Norm: DIN 2250; DIN 286, JS 3

• Form: C

• Category: gauges (Lehren)

FAQ

What is the intended use of this setting ring?
The setting ring is intended as a master reference for calibration and setting of internal gauges, comparators and bore-measuring devices; the Setting ring 175 mm (Metav IndustryLine, SKU M313.175) is suitable for medium bore references.

Which standards and tolerances apply to the ring?
The ring is manufactured to DIN 2250 and DIN 286 with tolerance class JS3, delivering a well-defined limit and suitable precision for shop‑level master references.

How does the lapped finish affect measurement quality?
The lapped surface reduces local surface irregularities and ensures more consistent contact between gauge and ring, improving repeatability when using the ring as a master reference.

Is the material suitable for long-term workshop use?
Constructed from hardened gauge steel and finished by lapping, the ring is designed for durability under regular handling and retains form stability over prolonged use.

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