Stepped clamps for rotary table

[chucketn]

I am setting up to cut gears using a 4” Vertex Rotary Table on my X2 Mill. Somewhere, in my research, I saw a picture of the same RT, clamped to a mill table using custom low profile clamps that nearly filled the slots on the Vertex and didn’t interfere with either the RT table or the chuck that was mounted. I didn’t think at the time to save the picture or ask the poster about it. Now I can’t find it.
The clamps did not require the use of the standard clamping kit step blocks. They looked like an upside down stair case.
Anyone know where this design came from? Can I get a reference or even a sketch of the dimensions, please?
Thanks,
Chuck