Starrett’s Electronic Digital Bore Gages are IP67 protection rated.

Press Release Summary:

Starrett’s offers 781BXT AccuBore® (trigger operated) and 770BXT (via thimble rotation) Electronic Bore Gages. Units feature 12.5 mm carbide-faced measuring contact with resolution of 0.001 mm and accuracy of 0.004 mm. Gages provide SPC analysis output via USB to a PC or RS232 option. 781BXT gages come with mechanically driven parallel anvils and Go/No-Go tolerance indicator lights whereas the 770BXT gages consist of precision ratchet stop for correct contact pressure.

Original Press Release:

Starrett Introduces Bluetooth-Enabled Electronic Bore Gages

Wireless technology speeds measuring throughput and supports expansive Industry 4.0 data requirements.

The L.S. Starrett Company ( has introduced two new Bluetooth® enabled series of electronic digital bore gages with a range of accuracy and convenience features for increasing measurement throughput when inspecting internal hole dimensions. The 781BXT AccuBore® Electronic Bore Gages are a trigger-operated gaging system, and the 770BXT Electronic Bore Gages, operated via thimble rotation, feature IP67 protection against dirt and coolant, making them ideal in harsh machining environments. Bluetooth wireless technology in both bore gage series enables fast, robust measurement data acquisition capabilities without the encumbrances and limitations of cables. Wireless technology also provides an ideal platform for manufacturers bracing to meet the comprehensive big data requirements of Industry 4.0. View product details at: (

Starrett AccuBore 781BXT Gages

AccuBore gages are a trigger-activated, two-point and three-point bore gaging system with extended range. Convenient single-hand operation provides increased measurement speed, control and throughput. A user simply squeezes the trigger, inserts the gage into the bore and releases the trigger, producing an instant reading from a large, easy-to-read digital display. Speed and convenience is further enhanced by a repositionable indicator for left, right hand, or vertical viewing and Go/No-Go tolerance indicator lights quickly display when a bore is within a preset measurement range.

Superior design features include mechanically driven parallel anvils that extend simultaneously, establishing true alignment to the axis of the bore, providing consistent pressure and improved accuracy compared to spring-driven contacts which are subject to pressure variations.

Starrett 770BXT Bore Gages

In addition to Bluetooth capability, the 770BXT Electronic Internal micrometers feature IP67 level of protection against coolant, water, dirt and dust in hostile shop conditions, making them ideal for measuring holes in work that is in-process on a machine.

The 770BXT gages offer extended travel, reducing the need to exchange anvils, providing a wide measurement range. A precision ratchet stop provides correct contact pressure for accurate readings on the large easy-to-read LCD digital display.

Both the 781BXT and 770BXT Bore Gage Series feature enhanced wear life due to carbide-faced measuring contacts that are available on sizes above ½" (12.5mm), resolution of .00005" (0.001mm), and accuracy of up to .00015" (0.004mm). Gages also feature push button inch/ metric conversion. Wireless output capability for SPC analysis is available via USB to a PC or RS232 connection.

About The L.S. Starrett Company

Founded in 1880 and headquartered in Athol, MA U.S.A., The L.S. Starrett Company ( is a leading global manufacturer of precision measuring tools and gages, optical comparators and vision systems and force and hardness testing solutions. Starrett also manufactures laser measurement systems, custom engineered granite solutions, custom gaging, band saw blades, power tool accessory saw blades, workshop tools and jobsite tools. The Starrett brand is recognized throughout the world for exceptional quality and precision. Skilled personnel, superior products, manufacturing expertise, innovation and excellent service and support have earned Starrett its reputation as the "World's Greatest Toolmakers". Starrett has over 1,600 employees worldwide and annual sales exceeding $200 million. The company has six manufacturing locations in the U.S.A., including facilities in Massachusetts, North Carolina, Georgia, Ohio, Minnesota and California. Starrett also has three international manufacturing facilities. Plants are located in Brazil, Scotland and China, in addition to distribution centers and offices located worldwide. The L.S. Starrett Company is publicly traded on the NYSE, symbol SCX.

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