Aristo : Adjustable Set Square : 45 Degrees : 10in

Perfect For Designers And Architects, This Adjustable Set Square Is Made Of Clear 3.5mm Thick Plexiglass And Is Great For Drawing And Measuring Angles. It Consists Of A Large Set Square With A Hypotenuse (longest Side) Measuring 25cm. The Hypotenuse Is Mounted On A Bolt And An Arc Scale, So That It Can Be Swung Out From The Rest Of The Set Square; This Allows The Set Square To Function As A Protractor. The Hypotenuse Can Be Fixed In Any Position On The Arc Scale Or Left Unfastened So That Different Angles Can Be Measured. The Arc Scale Runs From 0 To 45 Degrees And 90 To 45 Degrees. It Bears 1 Degree And 1/2 Degree Increments.