52422

456A Gear Tooth Vernier Caliper 52422

The Starrett 456 Gear Tooth Vernier Caliper is designed to measure in .001" or 0.02mm the thickness of gear teeth at the pitch line (the chordal thickness of the teeth) using the distance from the top of a tooth to the chord. For the same purpose, it can also be used for measuring hobs, form and thread tools, etc. 20-2 Diametral Pitch. @@@@Note:@@This item is discontinued. Please consider the recommended alternative listed above or contact our special order department at (978) 249-3551 x410 for more information.

Features
Specifications
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Features

  • Can be used for measuring hobs, form and thread tools
  • Adjusted independently by screws on the graduated bars
  • Thickness of a tooth at the pitch line is measured by an adjustable jaw after the addendum is set by the adjustable tongue

Specifications

  • Range (in): 0 to 1-1/4"
  • Graduations (in): .001"
  • Accuracy (in): +/-.0005" per foot