Starrett 

Starrett PT99412 Anti-Backlash Gear Assembly for 120 Series Calipers

Will fit: 
120A-6
120A-9
120-12
120B-12

This replacement part is for newer model 120's - WILL NOT WORK on older models such as the 120-6

Pic of envelope is for reference only - may not come with part

  • Last pic is for reference only as to the tool this screw attaches to - tool sold separately
We are an old hardware store with lots of rare & vintage items - in Starrett, Brown & Sharpe, Mitutoyo and many other brands.  Please inquire!
PLEASE NOTE: WE ARE CLOSED ON SATURDAYS & SUNDAYS AND THEREFORE MAY NOT ALWAYS RESPOND TO OFFERS.