HFT Caliper Roller Bracket

This is a replacement bracket for the roller on a Harbor Freight Dial Caliper.

http://www.harborfreight.com/6-inch-dial-caliper-66541.html

I had a new classroom set of these this year and 30% of them broke on the first day. I have set out to replace all of them with this bracket, works well in PLA. If your printer is calibrated well, the roller should spin freely in the bracket.