Crockmeter rubbing fastness tester, repair the damaged rubbing finger, clip and abrasive paper.

Accidental damage to the rubbing finger, spiral clip or abrasive paper should be repaired as follows: neatly renew the abrasive paper; bend the clip further open or shut around a rod slightly smaller in diameter than

the crock peg; resurface the finger by movement on an extra piece of fine emery cloth in a manner simulating regular use.