[hrdg4me]

I want to measure the distance from the cross slide table to the center line of the spindle bore on a lathe (hypothetical situation...any horizontal lathe say a TL-1 ). The more accurate the measurement, the better the results ....Using best machine shop practices, what would be the best way to get that distance without spending NASA type money to do it ? There must be a number of ways to skin this cat what would you do ?

[mariojl]

Turn any diam, measure it, let's say 1", with a heigth gage on the table, measure distance from table to top of 1" diam, substract .500, and you're done.
Acurracy depends on the tools used and your measure skills.
Mario

[JimBoyce]

An edge finder in the spindle and a block (123) and pin gages will do it.

[hrdg4me]

thanks for taking the time to answer. I've got a handle on in it now...