hello all, pls check attached holder : how to input the Y offset ?

a quick way, to hit ±0.2 ? and without turning a straight face? facing won't work for threading inserts, nor for P4 tools ( tools facing the 2nd chuck )

maybe something like the attached fancy gage ?




the holder is for square_shank=20, and accordingly to the drawing, i shoud use an offset of ±9 or ±29.5; but i modified the holder, so to be able to hold a square_shank=22, and i am afraid that the symmetry has been altered a bit; i modified it so to avoid the contact between the 'tool' and the 'screws of the holder', otherwise the screws will leave a mark on the tool; the screws won't touch the holder, but an intermediate prism 80x20x2; the prism will clamp the tool uniform; there won't be marks on the tool, but on that prism ( maybe i will craft some with heat treat )

i think i may use a dial indicator ? kindly

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