07-18-2012, 10:23 PM
I have a couple of 827A's that see regular use (probably my favorites), and a full 0.5000 single end version, as well as a 0.5000 body diameter with a 0.2000 contact cylinder on one end and a point on the other. They all have their places. I don't remember the model numbers, but some are Starrett and one s a Fowler, if memory serves.
The Dykem EF is a Poor Boy's edge finder. If you're careful, and you're supposed to be when edge finding, it won't mark the part beyond a little dye transfer. Plus you can get a 6" long drill rod and reach some awkward places where standard edge finders are difficult or impossible to use.
I've never tried the electronic models with LED's. Seems like a good idea, but I'd have to test it extensively to be satisfied with it, I think.
The Dykem EF is a Poor Boy's edge finder. If you're careful, and you're supposed to be when edge finding, it won't mark the part beyond a little dye transfer. Plus you can get a 6" long drill rod and reach some awkward places where standard edge finders are difficult or impossible to use.
I've never tried the electronic models with LED's. Seems like a good idea, but I'd have to test it extensively to be satisfied with it, I think.