Indicator holder for bed leveling and offset

This holder fits for 37mm Indicators, after printing it you should be able to press fit your indicator in it, after that i recomend to heat your buildblate to a 100 degrees celsius and put the part in standing orientation on it, this prevent a flat ground.

To calibrate the dial indicator i took a caliper and set it to 80mm (this depends on the lenght of your indicator) and set the needle to zero

after that i homed my printer (G28 X0 Y0 Z0)
then i rised the Z-axis to 80mm (G0 Z80)
And then I started the manual bed leveling mode on my Tenlog TL D3 Pro, but you can manualy drive your X and Y Axis to the corners
Put the nozzle under the indicator and adjust the screws untill it show zero

after this your bed should be leveled and your Z-Offset should be point on.

note: if your Z-offset is off it might be your steps per mm in the Z-Axis