1 mm Gauge Ball Pair Hardened Chrome Steel Accuracy 0.003 mm, Diameter Tolerance 0.00008 mm - Metav IndustryLine

Combine hardened chrome steel construction with a certified 0.003 mm measurement accuracy and a tight diameter tolerance of 0.00008 mm for reliable reference and repeatable inspection results; order the gauge ball pair directly via Metav Werkzeuge or ask our consultants if needed.

Gauge ball pair M318.411 – hardened chrome steel, 0.003 mm accuracy

The gauge ball pair is a compact reference set designed for high-precision measurement and alignment tasks in inspection and toolmaking.

• Hardened chrome-steel body
• Diameter accuracy 0.003 mm
• Diameter tolerance 0.00008 mm

Stable reference for repeatable measurement results

Built from hardened chrome steel, these miniature 1 mm spheres act as a stable reference for comparative measurements and fixture checks. The combination of fine surface finish and controlled geometry reduces measurement scatter, so results remain reproducible across repeated cycles. With a diameter accuracy of 0.003 mm and a machining tolerance of 0.00008 mm, the set provides a reliable benchmark for calibrating microscopes, comparators and precision measuring fixtures, supporting efficient quality control workflows and shorter inspection cycles.

Robust wear resistance and surface integrity

The manufacturing process yields a surface roughness of Ra 0.00001 mm and a hardness above >HRC 62, which together prolong service life under regular contact and minimise wear-induced measurement drift. The compact spheres are lightweight at 0.05 kg per set yet exceptionally resistant to deformation; this ensures that the reference geometry remains stable even under repeated handling. The result is fewer replacements, lower downtime and consistent measurement quality for production and laboratory environments.

Practical pair format for alignment and comparison

Supplied as a pair, the spheres enable comparative checks, contact-probe verification and simple go/no-go set-ups without elaborate fixtures. Their small form factor integrates easily into existing jigs and measuring stations, and the matched pair geometry simplifies symmetry and runout assessments. Intended as precision gauges in the “Lehren” category, these spheres are particularly suitable where compact, high-accuracy reference elements are required for fixture alignment, optical calibration or instrument verification.

For advice on integrating the Metav IndustryLine gauge ball pair into existing inspection procedures or to request a tailored supply from Metav Werkzeuge in Emmerich, please contact our technical consultants for specification support and delivery arrangements.

Technical data

• Article number: M318.411
• GTIN: 4054469183992
• Material: hardened chrome steel
• Diameter: 1 mm
• Set contents: 2 pieces
• Accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Surface roughness (Ra): 0.00001 mm
• Hardness: >HRC 62
• Weight: 0.05 kg

Facts

• Diameter nominal: 1 mm
• Accuracy (per sphere): 0.003 mm
• Diameter tolerance: 0.00008 mm
• Surface roughness Ra: 0.00001 mm
• Hardness: >HRC 62
• Pieces per set: 2
• Net weight: 0.05 kg

Special features

• Hardened chrome-steel construction
• Precision-ground geometry
• Very low surface roughness
• Supplied as matched pair
• Category: Gauges (Lehren)
• Brand: Metav IndustryLine

FAQ

What is the nominal diameter of the spheres?
The spheres have a nominal diameter of 1 mm as stated for the gauge ball pair M318.411 from Metav IndustryLine.

How precise are the gauge balls for reference work?
The gauge ball pair provides a stated accuracy of 0.003 mm with a diameter tolerance of 0.00008 mm, suitable for high-precision comparative measurements.

Are these spheres suitable for toolroom and lab use?
Yes, the hardened chrome-steel construction and a surface roughness of Ra 0.00001 mm make the set appropriate for both toolroom inspections and laboratory reference tasks.

How many pieces are included and what is the weight?
The supply consists of a matched set of two spheres and the combined net weight is 0.05 kg.

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