Bore gauge
Cylinder gauge is the comparative measuring instrument which measures inner diameter of a hole by comparing with master gauge (micro-meter, ring gauge etc.)
Center of gauge head and kan rod are guided to diameter part of a hole by guide plate, and displacement of gauge head is transferred to dial gauge by right angle change in the ratio of 1:1 with cam mechanism.
Measurement accuracy is changed according to scale interval ( resolution ) of used dial gauge. Measurable line up are available from ƒÓ6mm toƒÓ450mm according to size of diameter.
Micro-hole test
This is measuring instrument specially for small hole which measures inner diameter from minimum ƒÓ1.7mm to maxƒÓ10mm.
When edge of gauge head is inserted to small hole, edge is closed to inside and presses inner push-rod upward. The principle is that movement is transferred to tugiasi and instructs to scale mark of dial gauge.
Swing width of scale mark is read as well as cylinder gauge. It is the characteristic that repeating precision level indicating performance is high as 2um.
