03-16-2018, 08:42 PM
One more thing that I just discovered, and this may be representative only of the one that I bought, but the protractor head cannot be reversed on the square and maintain accuracy. That's a real shame, it would be a useful configuration.
When I reversed the protractor I saw an error of more than one degree ! The reason, looking closer, is that the inside edge of the short leg of the square is very rough and stoning didn't improve things much. A cup wheel on a surface grinder would be the ticket for fixing this but I don't have a surface grinder, LOL.
Hope that yours doesn't have this problem (and the vee groove problem) Greg.
When I reversed the protractor I saw an error of more than one degree ! The reason, looking closer, is that the inside edge of the short leg of the square is very rough and stoning didn't improve things much. A cup wheel on a surface grinder would be the ticket for fixing this but I don't have a surface grinder, LOL.
Hope that yours doesn't have this problem (and the vee groove problem) Greg.