POK Outside Diameter Air Gage

The POK with its spring-loaded, floating style contact point will act as an air regulator corresponding to the rough grooves and negate the valleys that would normally be sensed. If the roughness of the object is greater than 6S (Ry 6.3S) the POK style is the ideal solution provided the peaks and valleys are less than 5 mm (0.196”) wide. The carbide spring-loaded floating point is located at the tip of the measurement head. Outside Head for Air Gauge Sensor Probe

It is used mainly with the surface roughness being not less than 6 S and the width of the probe not more   than 5 mm.
This is a indirect probe which uses a solid carbide lever.
Size D A B C E F G
4 to 10 mm D+30 51 6 14 16.2 90
10 to 14 mm D+30 51 6 14 16.2 90
14 to 24 mm D+30 58 8 17 19.6 90
24 to 40 mm D+30 62 8 17 19.6 90
40 to 55 mm D+30 68 8 17 19.6 90
55 to 70 mm D+30 76 8 21 24.3 110