Logan lathe questions

[Trainman3450]

Hello all

I've recently started to build a small 4 3/4 inch gauge live steam locomotive, and so far it's gone well. The only hurtle I ran into was some problems with the Logan screw cutting lathe I'm using for it, as well as the milling machine I'm using (Which is similar to a Bridgeport, but has a bunch of odd parts and a different manufacturer name) relating to the unit of measurment used on the dials/collars on the handwheels to tell you how far the toolbit is traveling.

On my mini-lathe, the units are labled clearly on the dials, but on the machines I'm using, they're nowhere to be found and I can't find any manuals anywhere to tell me! This resulted in me having to start and stop the machine multiple times to see if I cut far enough, and resulted in one scrapped part when I cut too deep, and also resulted in allot of swearing and frustration.

Any information is helpful, and I'd like as much of it as I could get as I'm still a beginner machinist.

 

[bazmak]

Set up a dial indicator,move the handwheel 1 rev. and see how far it moved

 

[Swifty]

Can you post a picture of the dials? Or maybe easier still, what's the biggest number on the dial.

Paul.

 

[Wizard69]

Dial indicators and hard stops do wonders. Even on the Hardinge at work we use a dial indicator often.