Stanley #25 10 Inch Sliding Bevel
I picked this up in the same yard sale haul as the #68 and #95 - that means I have $0.50 invested in the item. This is a 10 inch sliding bevel
gauge with a brass and rosewood handle - not that you can tell from the
first picture.

After a little work with a 3M pad and a buffing wheel, this is the finished
product. It doesn't look brand new, but it does look well used and
cared for.

In this condition, the sliding bevel sells for about $30.