Digital bore gauge
STARRETT

AccuBore® is a high-quality, triggeractivated, three-point contact bore gaging
system with extended range. 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.
What makes AccuBore® superior to other gages are features like the mechanicallydriven parallel anvils which extend simultaneously, establishing a more true alignment to the axis of the bore. This provides consistent pressure, resulting in more accurate readings than models with spring-driven contacts which are subject to pressure variations