marking lathe dials

[Hopper]

Yes using a 100 tooth gear on the mandrel with a detente plunger mounted to the change gear banjo or whatever is convenient is the traditional method of indexing on the lathe for slotting etc. All of the old lathe books by LH Sparey, Tubal Cain etc mention it. You can also use a compound gear train to get all sorts of combinations. Have fun.

 

[workshopman]

The methods described by Martik777 and Hopper can be see on my website, as can other methods. See here http://www.homews.co.uk/page425.html See photographs 12, 13 and 14

Photo 15 shows a basic dividing head using change wheels that you may like to consider, more details here.
http://www.homews.co.uk/page132.html For an occasional use some make a simplified version.

If you are not conversant with my website then the book style index is a good place to start,
http://www.homews.co.uk/page463.html

Hope this helps
Harold Hall

 

[Mark Rand]

Wow, I just noticed the position of the decimal point. Thanks.

An hundredth of a millimetre is a bit less than half a thou.What's the problem?