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Master Vernier Calipers
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Features :
1.Screwed vernier caliper has the fatal shortcomings that its verniers are easily budged when bumped, which causes reading error. But the screwed vernier caliper has the virtue of its repairable worn measuring faces and budged verniers and long-life.
2.Monoblock vernier caliper has the fatal shortcomings that it can not be repaired due to its non-adjustable monoblock verniers when its measuring faces are worn, which is quite wasteful of resources. But the monoblock vernier caliper has the virtue of its unmovable verniers when bumped.
3.Master vernier caliper has the virtues of both screwed vernier caliper and monoblock vernier caliper, but without their shortcomings, because the left part and right part of its verniers are unmovable monoblock, but the middle part of its vernier is crewed vernier.
4.The jet black straight grooves on both sides of the master bar allow for positive alignment of graduations and flush fitting of the vernier scales to the main scale, which eliminates parallax.
5.Can measure outside diameter (O.D), inside diameter (I.D), depth and steps
6.Stainless steel, hardened throughout. Satin chrome finished vernier and main scale with jet black graduations for glare free reading. All graduations are marked by laser machine for accuracy.
7.With depth measuring bar
 
  Specifications :
  Measuring
Range
Order No. Veriner
reading
Limit
Error
L a b c d
  0-150mm 140-101 0.02mm 0.02mm 236 40 21 16.5 16
  0-200mm 140-102 0.02mm 0.03mm 286 50 24 19.5 16
  0-300mm 140-103 0.02mm 0.04mm 400 60 25 20.5 17
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