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Indicating Plug Gages

Dorsey’s indicating plug gages are used for repetitive bore measurement applications where extreme accuracy is important. These high accuracy gages often take the place of air or electronic bore gages.

Indicating Plug Gage Features:

  • Self centering plug head eliminates operator influence for extremely accurate applications
  • Non tipping design offers fast, simple, and accurate results
  • Carbide contacts are housed and protected by a dedicated hardened steel sleeve which is ground approximately .001" smaller than the lower limit of the bore being inspected
  • Single dial unit housing can be used with interchangeable plug heads
  • Plug heads: choice of 3 "H" dimensions allows measurement of thru bores, blind holes or super blind holes
  • Chrome plated plug head available
  • Optional depth stop
  • Optional right angle attachment

Attachment Size
id plug gages.pdf 528.02 KB

3.9" PG Depth Ext.

Part Number
D240-309

9.8" PG Depth Ext.

Part Number
D240-310

19.7" PG Depth Ext.

Part Number
D240-311

29.5" PG Depth Ext.

Part Number
D240-312

40" PG Depth Ext.

Part Number
D240-313

PG Storage Box - Small

Part Number
D240B-3

PG Storage Box - Large

Part Number
D240B-6