TOOL WALL FAMILY 02 — T-SQUARESAVAILABLE NOW
Actual 12-inch Lance standard T-square with blue fixed head; family reference for other lengthsPhoto: 12″ standard T-square.
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QUESTIONS BEFORE YOU ORDER
What does shipping cost for Standard Aluminum T-Square?

U.S. Standard Shipping is $8.99 USD below a $50 order subtotal; free at $50 or more. Oversize and freight shipping are excluded from this threshold. Mixed-profile carts can have combined charges.

What sizes is Standard Aluminum T-Square available in?

Standard Aluminum T-Square is available in 6 sizes: 12" ($12.19); 15" ($13.39); 18" ($12.25); 24" ($18.50, currently unavailable); 30" ($15.63); 36" ($22.50, currently unavailable).

Where are Lance rulers designed and made?

Lance rulers are designed in Massachusetts and manufactured in Taiwan.

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.

1 · T-square: register to the board

Standard Aluminum T-Square

12"
SKU T-012-LAN
$12.19 each

Available to order

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

View this tool and size

2 · Triangle: guide your angles

45°/45°/90° Template Triangle Ruler

6"
SKU TR-4590-6-LAN
$6.56 each

Available to order

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

View this tool and size

Optional · Add the other geometry

30°/60°/90° Template Triangle Ruler

8"
SKU TR-3060-8-LAN
$6.44 each

Available to order

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

View this tool and size

Select the checkbox to include this triangle.

Combined tool price: $18.75 before eligible discounts

2 individual tools, one of each displayed included selection. Eligible discounts appear in the cart. Shipping and tax are extra.

Long T-squares may incur oversize or freight charges. Estimate this actual cart before checkout.

Request school / team quantities or PO review
PRODUCT GUIDE

About this ruler

Register the T-square head against a straight board edge to draw perpendicular lines.

Register the head. Draw along the blade.

Schematic T-square: head rests against the left board edge; blade guides a horizontal line perpendicular to that edge Straight board edge Draw along the blade Keep the head in contact Support the blade and drawing surface

Drawing-board alignment diagram.

Use the board edge as the reference

  1. Check that the board edge is straight and the drawing is secured. Use an undamaged edge.
  2. Hold the T-square head against that edge with the blade resting on the work surface. Keep the same registration as you move it.
  3. 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.
  4. 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.

Care and safe use

Use a supported work surface for measuring and marking. Before using a knife or rotary cutter against an edge, confirm the selected ruler is suitable for the blade.

For tolerance-critical work, ask Lance for an accuracy specification.

SPECIFICATIONS & CARE

Specifications

Instrument familyStandard t square
MaterialAluminum blade; blue ABS head
FinishAnodized aluminum
ConstructionAluminum blade; blue ABS head · Blade: 1/8 and 1/16 inch; head: 1/8 inch · Anodized aluminum
Measurement systemEnglish
GraduationsBlade: 1/8 and 1/16 inch; head: 1/8 inch
Scale typeEnglish
Country of manufacture Taiwan
Warranty30 days.
ReturnsReturns accepted within 30 days for unused products.
Handling timeSame-day shipping for orders placed by 2:00 p.m. Eastern Time.
Same-day order cutoff 2:00 p.m. America/New_York (Eastern Time)

Designed for

  • Drafting
  • Perpendicular layout

Care and storage

  • Store flat or fully supported so the measuring body, square head, or curve is not bent or twisted.
  • Wipe with a soft dry cloth after use; if a lightly damp cloth is needed, dry the instrument immediately.
  • Protect calibrated edges and printed or engraved markings from impacts, abrasives, solvents, and cutting tools.
WHO THIS RULES FOR

The work this instrument belongs to.

Teachers rule. Board-side demonstration of perpendicular construction. Enter Teachers Rule → Engineers rule. Technical drawing — the right angle the sheet is built against. Enter Engineers Rule → Makers rule. Marking and layout on a supported work surface. Enter Makers Rule →

Complete the bench

FAMILY 05 · TRIANGLES
45°/45°/90° Template Triangle Ruler

A 45°/45°/90° drafting triangle with integrated circle templates.

From $6.56
FAMILY 01 · STRAIGHT EDGES
Aluminum Straight Edge Ruler — Inch

An anodized aluminum inch ruler offered from compact bench lengths through long-format layout sizes.

From $3.30