Master Setting Ring Gauges Dia. 2.75mm to 500mm.

Features:

• Blank Design as per I.S. 3485-1983.
• Gauging Practice as per I.S. 3455-1971,American(ANSI/ASME),British Standards(BS),German Standard(DIN),Japanese Standard(JIS),Russian Standard(GHOST) etc. for Plain Go/No-go Rings.
• Materials : En31 (SAE52100),OHNS and Tungsten Carbide.
• Certificate of Calibration will be provided with each gauge Traceable
  to National Standard of Lengths.
• Calibrated at 20 degree centigrade Under Standard Room
  Conditions.
• Subzero treated @-80 degree centigrade for Dimensional Stability.
• Actual Size will be etched on Master Ring.
• Masters are black oxidized or hard dull chrome plated.