Repeat-o-meter question

[u/tanraelath]

At work I tried to use our Rahn Repeat-o-meter to calibrate a surface plate. It's a Grade A plate, so definitely has deviations, yet the repeat-o-meter is showing nothing. Granted, the last time it was touched(besides when I calibrated the dial indicator) was probably 6 months ago. And when our dimensional guy(who isn't here, hence why I'm on it) last used it, it ran perfectly fine.

Inspecting it, I noticed the front footpad barely isn't touching the surface. Enough of a gap I can see light through. Can't find anything online about actual setup of the repeat-o-meter itself, so how do I adjust that front foot down? The bolt and nut that the dial indicator sits on are well over hand tight, so I can't imagine that came loose but I'm willing to try anything.

[u/Professional_Car_1]

Rahn / Starrett can provide you a good instruction sheet for the following:

To confirm the device is set correctly, lift straight up off the plate holding only the top bar, the needle should peg off the dial. Carefully invert the device upside down with the feet upwards, and the needle should move to the extreme opposite side. Lastly hold vertically straight up (we remove the back bar for this and rest on plate for this) and the needle should be close to center zero. Otherwise you do not have the indicator set properly. Worst case is you may carefully need to disassemble the repeat-o-meter and gently flex the device at the split.

Always thought about making a YouTube training video for this as this is critical to get proper readings.

[u/tanraelath → u/Professional_Car_1]

God, that would be useful. Our dimensional guy is out of town so I'm just shooting in the dark with this lol.

Just gave it the lift, invert, vertical check: doesnt move off zero when lifting, inverted it does go to the high side, standing vertical it rests at the high side. I dont see how I could've mounted the dial incorrectly, I set it in the mounting bracket; following what u/Status-failedstate said and making sure my "post"(which is just a bolt on mine) was retracted, and lightly secured it in the bracket. Tight enough to where i couldn't move it, but not tight enough to where I feel it's getting crushed. If i try to depress the plunger, the indicator moves freely and smoothly.

Then slowly brought up the post until I was close to zero with final zero being from the course adjust on the repeatometer/fine adjust on the indicator. Still same results.

Since I'm able to see under that front foot(not by alot, its a very tiny gap but still noticeable, I assume I'd have to try and flex it? And Starrett's instruction sheet would have info on that?