The thread is presented in transmitted light and has a focussed  shadow.

For these measurements the parallelunder lights

(ordering number  CV-PPL green or blue)  are mandatory.

Level the thread hoizontally, an exact adjustment along the x-axis is not

necessary, possible deviations will be corrected  automatically.

A polygon is drawn around the part of the thread to be measured

The polygon is constructed marked as an object and now active as a frame for

the following thread measurement.

Start the pitch measurement

During the progress bar is faded in, the program calculates the parameters

and displays  the value in the image afterwards.

The pitch can also be determined at any part of the pitch, in this case it is

sufficient just to activate the function "pitch".