T track on enlarger table. What for?

[vinny]

My 10x10 Fotar table was modified with t track and was used at a lab that did lots of retouching and dupe work. I need to rebuild the table and will likely leave it out but What would they have used it for? Holding down easels?

[Leigh]

Assuming the tracks are on the top...

I expect it was used for clamping an easel in place so each print would be identical.

- Leigh

[vinny]

yeah, on top. I'm gonna make a new table since this one has absorbed too much moisture to be flat. Those tracks happen to be the same dimensions as the t-tracks in my router table so I'll save them for my miter saw bench.

[dsphotog]

To adjust and lock down a roll paper easel.

[John Koehrer]

Focomats used a track to lock down an easel. Maybe the T track is for accurate/repeatable positioning.