The post mounting hole of your clock dial (or mounting material) needs to have a large enough diameter to fit the shaft of the clock movement through it. The easiest and most accurate way to measure the shaft length on a clock movement is to use the depth gauge on a digital caliper.

How is clock mechanism measured?

The post mounting hole of your clock dial (or mounting material) needs to have a large enough diameter to fit the shaft of the clock movement through it. The easiest and most accurate way to measure the shaft length on a clock movement is to use the depth gauge on a digital caliper.

What is clock dial thickness?

Dial thickness is the measurement of the material that the shaft of the clock motor is going through. Example you have a piece of material which is 8mm thick you would simply choose a 10mm dial thickness size as the 6mm dial thickness would be to small and the 10mm is suitable for sizes up to 10mm.