Jon Elson wrote:
All,

I have had a 12" dial caliper for quite some time. It has the "guarded
rack" design, where the depth rod on the right covers the rack. Well, last
night I went to use it, and it bound up, and I could tell that something was
jamming the rack-pinion engagement. I managed to get it apart and cleaned
the rack as well as I could, and now it works fine from 0-7", but from 7 -
12" there are many spots where it binds and then the pointer jumps. I've
looked at the rack with a microscope and cleaned all the little bits of
debris out of the rack, but it still binds and jumps. I ordered another
one, but anybody have any suggestions? I have studied the rack teeth with
the microscope, and I am really STUMPED! I can hardly tell any difference
between the good 7" and the bad 5" portions!

Thanks,

Jon

Hit Facebook for M.R. Tool Repair.

Mark Ratkowski is the guys name, ask him about it and he can tell you
what to look for and what it takes to repair it. He repairs and
certifies pretty much any type of measuring gear.

--
Steve W.