Calculation Tools for measurement
Please note that our Online Calculators are offered as assisting tools and can not replace human consultation. We take no liability for the mathematical correctness of these Online Calculators.
For many calculations – e.g. to determine the dimension over two balls from the tooth thickness – it is necessary to transform involute alpha to the pressure angle.
There are different instruments to inspect the size over/between two balls. The most simple instrument is based on the rocking method. These hand-held instruments are equipped with measuring inserts and a dial indicator. The nominal size is adjusted by gauge blocks. Afterwards, the operator needs to find the reversal point to receive the relative deviation.