Lance field guide · Drafting

Choose the T-square for your board and drawing.

Standard or heavy-duty aluminum?

Both register a fixed head against a straight board edge for perpendicular drafting and pencil/pen layout. Choose a blade that spans the drawing while remaining supported by your surface.

Standard Aluminum T-Square

For everyday drafting spans; compare its smaller blade/head with the heavy-duty alternative.

12" · $12.19 each
SKU T-012-LAN

Blade width: 38.1 mm

Head length: 228.6 mm

View this available 12" size →

Available lengths: 12", 15", 18" + 1 more sizes

U.S. standard: $8.99 USD; free at $50+.

Heavy-Duty Aluminum T-Square

For larger layout spans; compare its wider blade and longer head with the standard alternative.

24" · $29.93 each
SKU HT-024-LAN

Blade width: 50.8 mm

Head length: 406.4 mm

View this available 24" size →

Available lengths: 24", 36", 42" + 2 more sizes

U.S. standard: $8.99 USD; free at $50+.

Compare the dimensions of the size you select with your drawing board.

Compare the distinct stainless-steel alternative and all available T-squares →

Register the head. Draw along the blade.

Drawing-board alignment diagram.

Use the board edge as the reference

Check that the board edge is straight and the drawing is secured. Use an undamaged edge.
Hold the T-square head against that edge with the blade resting on the work surface. Keep the same registration as you move it.
Draw in pencil or pen along the blade. A triangle can rest against the blade to guide its own stated angles; keep both contact edges seated.
Choose blade length to cover the required drawing span from the board edge without unsupported overhang. Use a straight, undamaged board edge.

Need two measured pattern axes without a board-edge reference? An L-square is a different alternative.

Check the blade length and head dimensions for your drawing board.

Build a drafting combination

A registered straight line, plus the angles you use

A T-square establishes the board-edge reference. A triangle rests against its blade to guide perpendiculars and the triangle’s stated angles. Add the second geometry only if your drawing calls for it.

Includes the selected rulers, supplied individually. Add your own drawing board, paper and pencil.