I don't own one (but I lust for one haha).
I don't quite understand how they operate. From what I've read, you close the anvil on a standard like a gage block or pin, then lock the spindle. That is the zero/target position. Then present to the part. They have a release button which then allows the needle to show +/- deviation at finer resolution (like tenths). So how does the fixed end stay put for the step-1 calibration stage, but but allows float to indicate needle movement? Maybe the plunger unlocks the normally fixed end on a regular mic?
I don't quite understand how they operate. From what I've read, you close the anvil on a standard like a gage block or pin, then lock the spindle. That is the zero/target position. Then present to the part. They have a release button which then allows the needle to show +/- deviation at finer resolution (like tenths). So how does the fixed end stay put for the step-1 calibration stage, but but allows float to indicate needle movement? Maybe the plunger unlocks the normally fixed end on a regular mic?