These Holtests are versatile, self-centering three-point internal micrometers for the accurate and efficient direct-measurement of internal diameters. Three anvils, evenly spaced at 120° apart, contact the internal wall surfaces and find true alignment with the axis of the bore for accurate ID measurement.
Each set includes complete gages (micrometer head units and measuring heads for each size):
INDIVIDUAL RANGE: .8-1", 1-1.2", 1.2-1.6", 1.6-2"
SETTING RINGS INCLUDED: 1" DIA., 1.6" DIA.
REMARKS: with extension rod
|Range||.8 - 2"|
|Unit of Measure||Inch|