Ned Simmons wrote in message ...
In article ,
says...

"Richard J Kinch" wrote in message
. ..
Craig Suslosky writes:

I have a 1960 Bridgeport J head mill I am working on and have a
question. On the right side of the knee (facing the machine) there are
three 3/8-16 tapped holes, which are also spotfaced to accept washers.
What are these holes for? These are not the grease fitting holes, mine
hase nothing there. Just wondering if anyone knows what should be
there.

A DRO scale that has been removed.

Nice try.

Bridgeport mills come with the holes, likely so you can mount a DRO scale.

Though I'm sure many DRO scales have been mounted in these
holes, they were originally intended for mounting a trough
to be used with end measuring rods. The x-axis trough
mounted in the t-slot on the front of the table.

Ned Simmons

Thanks everyone, can I just put bolts in them to close the holes? It
did not look like anything was ever there, I wanted to make sure
something wasnt missing that was supposed to be there.
Thanks again,
Craig