Wooden Stock and Blade with Clear Plastic Edge (1102).

This Edge is Raised from the Board Surface to avoid Smudging of Ink Work.

Parallel Blade for Left or Right Handed Use.

Tee Squares are often made with a tapered blade.
The Draftex 1102 range of Tee Squares has a parallel blade.

The blade is hardwood and the drawing edges are of clear acrylic and raised to prevent ink smudge. 

Available in 60cm, 90cm and 105cm