Review on Precision Measuring: OLI Stainless Protractor for Woodworking Construction by James Lesley

I checked the accuracy of 90 degrees with an exact machine angle - the tool came out exactly. It responds to the slightest movement, so trying to find the right angle requires a gentle touch. I wish it came with a fine adjustment dial to make this easier. The instructions are printed on paper that is too large and cannot be stored in the supplied case.