Starrett 781BXTP-12 AccuBore Electronic Pistol Grip Bore Gage with Indicator, 4-8″

Original price was: $2,774.00.Current price is: $2,448.00.

The Starrett 781BXTP-12 AccuBore is a high-quality, trigger-activated, three-point contact bore gaging system with extended range and Bluetooth Data Output. Its convenient single-hand operation provides speed and control. Simply squeeze the trigger, insert the gage into the bore, and release the trigger for an instant reading from the large, easy-to-read digital display.

Product Description

What makes the 781BXTP-12 superior to other gages are features like the mechanically-driven parallel anvils. They extend simultaneously, establishing a true alignment to the axis of the bore. This provides consistent pressure, resulting in more accurate readings than models with spring-driven contacts subject to pressure variations.

Further enhance speed and convenience by the repositionable AccuBore® indicator, which can swivel and rotate for left, right-hand, or even vertical viewing. The 781BXTP-12 also features a set of “Go/No-Go” lights in the readout display that indicates whether a bore measurement is within a preset tolerance. 

This model includes an indicator. 


  • Bluetooth® capability
  • Single-hand operation with right- and left-hand viewing flexibility
  • Large, easy-to-read display
  • Enhanced wear life with carbide-faced contacts – available from 1/2″ to 8″
  • Convenient “Go/No-Go” tolerance indicator lights
  • True alignment with mechanically-driven parallel anvils
  • Resolution .00005″ (0.001mm)
  • Accuracy of up to .00015″ (.004mm)
  • Push button inch/metric conversion
  • Preset and preset recall
  • Hold, max/min, and zeroing capabilities
  • Blind bore measurement is standard for .50″ (12.7mm) and above
  • Specialized heads available for thread, groove, and other non-standard measurements on request
  • Output capability for Statistical Process Control (SPC) analysis. Download data via USB to a PC or RS232 connection.


  • Manufacturing
  • Machining
  • Mechanical Engineering
  • Automotive
  • Aerospace
  • Medical
  • Energy
  • Food and Beverage

About Starrett

The L.S. Starrett Company is a world leader in precision measuring tools and instruments. Since 1880, they have been an industry standard. Starrett’s high quality and durability have made the brand an industry standard for decades. They produce products for various industries, including aerospace, automotive, manufacturing, and commercial construction. Today, they’ve expanded into metalworking, making saw blade products for manufacturing operations worldwide.

Additional Information

Weight 7.8 lbs
Dimensions 18.1 × 11.5 × 4.2 in
Range (in)


Range (mm)


Bluetooth Capability


Resolution (in)


Resolution (mm)

Hold; max/min; zeroing; inch/metric conversion; preset recall


Indicator, Case

Operation Type

Electronic/ Digital

Accuracy (in)


Accuracy (mm)


Display Type



Inch/ Metric

SPC Output


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