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Vernier & Pocket Calipers

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456A

There is a newer version of this product available

456AZ Gear Tooth Vernier Caliper
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.

456A Gear Tooth Vernier Caliper 52422

456, 456M Gear Tooth Vernier Calipers
Gear Tooth Vernier Slide Caliper, 0-1-1/4"

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
Parts
Downloads
3D CAD Files / Exploded Parts Diagram
Product Testimonials
California Prop 65
Contact Starrett

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

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

Downloads

    Catalog 33 - Section 2 - Slide Calipers

    Our calipers are light, comfortable, easy-to-use, and constructed with features that have made Starrett slide calipers the machinist's first choice for many years.

    Precision Hand Tools (Catalog 33)

    612 page catalog featuring precision hand tool, force measurement, vison systems, optical comparators, laser measurement, and flat stock.

3D CAD Files / Exploded Parts Diagram

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Product Testimonials

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    Parts

      Member of Kit
      Item #DescriptionPart No.QtyInformation
      1BARNOT AVAILABLE 11* SEE NOTE
      2VERTICAL JAW HOLDERNOT AVAILABLE 21* SEE NOTE
      3HORIZONTAL JAW HOLDERNOT AVAILABLE 31* SEE NOTE
      4VERNIER PLATENOT AVAILABLE 42* SEE NOTE
      5CARRIER SUB ASSEMBLY05828-02
      6GIB, CARRIER FILLER17972-04
      7SCREW, .100-56 LOCK X .393 LONGPT079594
      8NUT, .100-5605832-02
      9ROD, .100-56 ADJ.02427-02
      10SCREW, .085-60 SET X .389 LONG05834-01
      11SCREW, #1-64 SLOT X .088 LONGPT01195A4
      12PIN, .040D X .188L05835-01
      13COLLAR, ADJ. SCREW05856-02
      14* CUSTOM FIT AT FACTORYNO-NUMBER0

    California Proposition 65 Warning

      WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov