Cylinder Inspection Method?

[Sophia]

Cylinder inspection method is as follows: 1. Clean and dry the cylinder barrel and upper surface to be inspected. 2. Select an appropriate extension rod according to the cylinder diameter and screw it into the lower end of the cylinder gauge. 3. Calibrate the cylinder gauge with an outside micrometer based on the standard size of the cylinder being measured, leaving an appropriate extension length for the measuring rod (i.e., pre-compression of about 1mm). Rotate the dial to align the "0" position with the pointer, note the millimeter reading indicated by the small pointer, fix the extension rod nut, and recheck. 4. During measurement, hold the insulating sleeve, tilt the cylinder gauge into the measurement position inside the cylinder, and gently swing the gauge so that the pointer swings equally left and right (the cylinder centerline should be perpendicular to the measuring rod). If the pointer aligns exactly with "0", the measured diameter equals the standard. If the pointer moves clockwise away from "0", the cylinder diameter is smaller than standard; if counterclockwise, it's larger than standard.