groove dial caliper


  • This inner caliper gauge to measure inner diameter of cylinder type work and inner ditch diameter. It can measure ditch diameter of “0” ring by modifying gauge head.
  • Set dimension within ±1mm (indication range 2mm) can be comparatively measured (880 series) by alternatively using auxiliary alternative gauge head in accordance with measured dimension.
  • Please set standard dimension within measuring range with micro-meter or ring gauge.
  Graduation Measuring Movable Pointer Repeatability Measuring Weight
Model (mm) Range Range Revolution   Force (g)
    (mm) (mm) (mm) (pm) (N)  
IM-807 0.005 2.5-7.5 2.3-7.8 0.5 5 1.7 or less 120
IM-815 0.01 5-15 4.7-15.5 1 5 1.7 or less 140
IM-820 0.01 10-20 9.5 - 20.5 1 5 1.7 or less 140
IM-830 0.01 20-30 14.7-30.5 1 5 1.7 or less 140


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