Thanks to a little help from here I managed to get hold of one of these "button back" dial gauges
First job was to make a holder for it to use with the milling machine for tramming the head. A simple 20mm SS bar with a grub screw arrangement to hold the arm.


In the past I have used a normal type dti that we are all familiar with. Although this works well enough reading the dial as you spin it around is a real chore when it faces away from you.
With this gauge you can always read the dial with little trouble at all.
Here you can see the tram was about 8 thou out. The gauge reads in tenths so every ten divisions is one thou.
I got the tram down to two tenths in all directions which is rather pedantic but it I wanted to see if it could be done

Rather pointless I know, cos if you lean on the machine it move a whole thou anyway so we can only guess what it's doing when cutting.
I would guess normally tramming to a thou would be close enough.

