Forster Datum dial question

[tac284]

Looking for someone who owns one and a measurement. Can you measure for me to the best of your ability the hole diameters of the bullet dials. Calipers will work but if you have some minus pin gages that would be great. What I’m looking for is how close they relate to bore/groove diameters.

Mainly need 6mm, 6,5 & 7mm holes measured.

Thanks

 

[SGK]

.243 Cal = .233"

.257 cal = .247"

.277 cal = .267"

w/ callipers. All are 10 thou less than their nameplate.

But ping Forster the question.

 

[tac284]

Thank you! that gives me an idea of where there at.