Hello all,

I have a 6" Phase II dial caliper that has a bit of schmutz in the small brass gear that follows the rack (at least that's what it seems to be).

My question is: should I go ahead and try to dismantle it to the point where I could clear the chip or speck of grit?.....I had a problem in the past with it getting stuck when I extended it to the 5" point, and the local Machine tool supply guy said not to dis-assemble it 'cause it would be a can of worms.....that problem sorted itself out in the end.

I have removed the long rack cover part, but am not sure if there's anything to beware of in going ahead any further.

Any advice would really help!

John