1 inch dynamometric key attack

[chiodoarrugginito]

Good morning.
I'm supposed to build a 1''' dynamometric key attack seat.
the seat, in addition to the obvious square shape, has caves where the spheres of the dynamometric key (ø3? ). . .
I would need to have the measurements to be able to draw them; I indicated in the image the measures I would need.
thanks for your support :biggrin:

 

[xxfast]

see if it can help you this...however I would do it of the diameter of the ball. .
View attachment Craftsman Socket Adapters_4271.zip

 

[chiodoarrugginito]

thanks but it is 3/4'''':smile: