625mm Setting Gauge For Micrometer With Thermal Shield, Ballistic Measuring Faces Accuracy ±0.007mm - Metav IndustryLine

Take advantage of the combination of high dimensional stability, fine ±7 µm accuracy, and integrated thermal protection for consistent micrometre adjustments; order the setting gauge directly via Metav Werkzeuge or consult the Metav specialists for application advice.

Setting gauge for micrometres M304.320.8 — 625 mm nominal length, ±7 µm accuracy (Metav IndustryLine)

A Setting gauge for micrometres M304.320.8 intended as a robust reference standard for the calibration and setting of external micrometres in metrology workshops and production control.

• 625 mm nominal length for stable referencing
• Accuracy ±7 µm for reliable calibration
• Ball-ended measuring faces for safe contact
• Integrated thermal protection reduces drift

Precise reference for micrometre adjustment and calibration stability

The M304.320.8 functions as a reference standard that delivers repeatable results when setting external micrometres. Its nominal length of 625 mm provides an extended datum for comparative checks and for aligning micrometres across a wider measuring range than short-setting rods. The specified accuracy of ±7 µm (0.007 mm) ensures that adjustments are traceable within tight tolerances, which supports consistent quality control in workshop and inspection environments. Using a defined reference reduces setup variation and shortens inspection cycles by providing a single, reliable datum for multiple gauges.

Reduced measurement uncertainty through thermal and contact design

Thermal effects and contact geometry are common sources of measurement error; this setting gauge addresses both. The built-in thermal protection minimises dimensional drift during transfer between different temperature zones, while the ball-ended measuring faces limit point contact stresses and reduce the sensitivity to slight angular misalignment when engaging a micrometre spindle. The 16 mm diameter of the contact balls delivers a controlled contact area that balances surface conformity with minimal indentation risk. Together these features lower overall measurement uncertainty and make routine adjustments less dependent on operator technique.

Robust handling and integration into workshop routines

Constructed for practical use in production and calibration benches, the gauge weighs 1.1 kg, providing a stable feel without excessive bulk. Its form factor suits repeated handling and rapid alignment steps during shift changes or sampling inspections. As an accessory-class product, it integrates smoothly into standard inspection workflows, allowing quick comparative checks and speeding up the setting of multiple gauges. The combination of extended reach, defined contact geometry and thermal shielding makes the device particularly useful where several micrometres must be harmonised to the same reference in a short timeframe.

Contact Metav Werkzeuge today to discuss how the Metav IndustryLine setting gauge M304.320.8 can be integrated into existing calibration routines and to receive tailored advice from the Emmerich precision team.

Technical data

• Article number: M304.320.8
• GTIN: 4054469116778
• Tariff number: 90173000
• Weight: 1.1 kg

Numbers / Core technical data

• Nominal length: 625 mm
• Accuracy: ±0.007 mm (±7 µm)
• Contact ball diameter: 16 mm

Special features

• Ball-ended measuring faces
• Integrated thermal protection
• Category: Accessory for micrometre setting

FAQ

What is the primary use of this gauge? The setting gauge M304.320.8 is used as a reference standard for adjusting and checking external micrometres, enabling consistent comparison and calibration across multiple instruments.

How accurate is the reference and what does that mean in practice? The gauge offers an accuracy of ±7 µm; this level of precision supports reliable micrometre adjustments and reduces variability in routine calibration tasks.

Do the measuring faces require any special handling? The ball-ended measuring faces on the M304.320.8 are designed to limit point pressure and alignment error; gentle handling and clean contact surfaces are recommended to preserve accuracy.

Can the gauge be used for setting different micrometre sizes? Yes, as a stable reference standard the M304.320.8 is suitable for setting a range of external micrometres used in workshop and inspection environments, particularly where a common datum is required.

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