We are indebted to Mr James Batchelor for this design. The lower arm of of the UPT accepts a jig to hold the clock plate. After centring the appropriate hole in the clock plate, a Bergeon-type reamer, guided in the upper arm, corrects the worn hole. The reamer is then exchanged for a small press which pushes the bush accurately into position.
The kit includes materials for jig, press, reamer holder etc. drawings and instructions