For use with user made router tables saw benches and band saws heavy duty with adjustable stops at 45 degree 90degree 45 degree scale pitch of 5 degree protractor body 140mm x 48mm high with metal bar 300mm x 17mm spring loaded locator for 90 degree with 1 degree adjustable location centring scale specifications protractor body 140mm x 48mm high with metal bar 300mm x 17mm