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PRODUCT CODE: 54-366-020

XTD Electronic Holemike # 54-366-020

Range/Size: 1-1.375"/25-35mm

Graduations: .00005"/.001mm

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Product Description

******************************DISCONTINUED PRODUCT******************************

The Fowler-Bowers 54-366-020 XTD Electronic Holemike Set has now been discontinued and replaced by the new Fowler/Bowers Bluetooth XTD3 Electronic Holemike Set: 54-367-021-BT

54-366-020 Fowler/Bowers XTD Electronic Holemike Bore Gage: 1.00-1.375?/25-35mm

The 54-366-020 Fowler XTD Electronic Holemike set is made up of the following:

  • 54-342-017 Fowler XT Head: 1-1.375″/25-35mm
  • 54-332-010 Fowler XT Setting Ring: 1.375″/35mm
  • 54-364-552 Fowler XTD Electronic Holemike Readout: .750-2″/20-50mm

The Fowler/Bowers XTD Electronic Holemikes are the new generation of the Fowler/Bowers bore micrometers. The XTD electronic holemike bore gages now have extended travel with fixed anvils. Operators no longer have to worry about switching out the anvils as in past generations. All XTD Electronic Holemikes come standard with a ratchet stop which ensures better repeatability among operators. The ?two-button? electronics are easy to operate and have the capability of storing up to three preset sizes. The holemikes have RS-232 output and can be connected to a laptop or PC by cable (see below) or wirelessly.

The 54-366-020 XTD Electronic Holemike Set comes with a 5-year warranty. These digital internal micrometers are manufactured in England by Bowers Metrology, one of the most respected bore gaging companies in the world. Top quality products usually come with a great warranty and the Fowler/Bowers XTD Electronic Holemikes are backed with the best warranty in the industry.


  • Large easy-to-read display
  • Direct inch/metric conversion
  • Ratchet stop for consistent measurement
  • Resolution: .00005″/.001mm
  • RS-232C output
  • Setting rings included in all sets
  • Includes UKAS certificates for all micrometers and setting rings
  • Special anvils available

The Fowler 54-366-020 XTD Electronic Holemike has an accuracy of .00015?/.004mm.

There are two RS-232 cables available that can be used with the 54-366-020 XTD Electronic Holemike:

Below is a list of the XTD Electronic Holemike Bore Gages:

Individual Sets:

Large Capacity Sets:

The 54-366-020 XTD Electronic Holemike set is also offered as an XTH Holematic Pistol Grip Set:

  • 54-566-725 XTH Holematic Pistol Grip Set: 1-1.375″/25-35mm

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