Posted by Steviegtr on 06/03/2021 13:52:27:
I needed a finger type DTI. The Mercer one i have is a bit iffy at best. So i bought one off ebay. Just a plain faced cheap item to do what i need . Accuracy not that important.
It was £16 & in the picture it looked a pretty yellow colour. It arrived in a nice plastic fold open box, with 2 different size dovetail. All good & works fine. But in the ebay pictures it was a plain face. Look at the one i received. You have got to laugh.
Steve.

I've looked inside a few DTI's and in all of them the actual mechanism seemed quite simple, I'm now wondering what the 7 jewels do, have you counted to see they are all there?
Ian P