Holes

Mostly so they are easier to move and pick up. Some do not have the holes and some do. It does not affect the accuracy.

Paul
 
I recently read a description of a set of parallels (don't remember where) that said " with 2 holes for mounting ", but I have no idea what you would mount them to, or why. Anybody know? JR49
 
JR49 said:
I recently read a description of a set of parallels (don't remember where) that said " with 2 holes for mounting ", but I have no idea what you would mount them to, or why. Anybody know? JR49
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My dad hung them on finishing nails in a board at the end of the lathes. So "mounting" in his case meant hanging them in pairs for easy access.
 
You can use them to attach small ball bearings, and use as a makeshift sine bar. Adjust the bearings so the centers are at a easy distance. Not a 5" sine bar, so charts won't work. Do the trig (simpler than you think) or take a number from a chart, divide by 5, then multiply by the distance between bearings (In inches) to get your height of stack blocks needed for a certain angle. Clear as mud? :)
 
That's not the link I was searching out.

Not that I've used them as such but older mentors have said they could be mounted to the machine vise for quick setup in production work.
 
So your wife doesn't give them to your neighbors that come over when your gone asking if they can have a piece of scrap iron.
It looks like a tool and is not mistaken for random stock.
I made some press plates once for pressing a 80 cc two stroke crank. Didn't make them look fancy or paint them. Some one came around looking for scrap.....guess what they got.
 
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