Each family compares on the fields that actually decide it — construction where construction differs, geometry where geometry differs, orientation where orientation differs. Nothing else.
01 — Straight edges
DECIDED BY UNIT · LENGTH · WIDTH · BACKING
InstrumentUnit systemLength rangeWidth / backingConfigurationsLive state
Aluminum Straight Edge Ruler — Inch$3.30+Inch6" — 144"Width rises with length · unbacked11 offeredChoose configurationView product English/Metric Aluminum Straight Edge Ruler$6.50+Inch + cm15cm / 6" — 200cm / 79"Width rises with length · unbacked7 offeredChoose configurationView product Metric Aluminum Straight Edge Ruler$8.50+Inch + cm30cm — 100cmWidth rises with length · unbacked4 offeredChoose configurationView product Slip-Resistant-Backed Aluminum Ruler$2.95+Inch12" EVA-Backed — 6" EVA-BackedBacking varies by configuration9 offeredChoose configurationView product 02 — T-squares
DECIDED BY CONSTRUCTION · BLADE · HEAD
InstrumentConstructionBlade lengthsHead / bladeConfigurationsLive state
Heavy-Duty Aluminum T-Square$29.93+Heavy-duty aluminum24" — 72"Larger head and wider blade7 offeredChoose configurationView product Heavy-Duty Drafting Stainless Steel T-Square$16.63+Stainless construction18" — 48"Physical specs under review6 offeredChoose configurationView product Standard Aluminum T-Square$12.19+Standard aluminum12" — 36"Standard head and blade6 offeredChoose configurationView product 03 — L-squares
DECIDED BY SCALE SYSTEM · ARMS
InstrumentScale systemArm dimensionsUnitsConfigurationsLive state
Aluminum L-Square$9.50+Full scale12" x 6" · 60cm x 35cmInch / metric by configuration4 offeredChoose configurationView product Half-Scale Aluminum L-Square$9.50Half-scale calibration system12" x 6" (Inch) · 30cm x 15cm (Metric)Inch / metric by configuration2 offeredChoose configurationView product 04 — Curves
DECIDED BY GEOMETRY · TASK
InstrumentGeometryPattern taskNominal rangeConfigurationsLive state
Aluminum French Curve Ruler$8.50+Tight technical transitionsArmholes · compact profiles12" (Inch) — 60cm (Metric)4 offeredChoose configurationView product Aluminum Hip Curve Ruler$12.50Long shallow sweepHips · inseams · garment contours24" (Inch) — 60cm (Metric)2 offeredChoose configurationView product 05 — Triangles
DECIDED BY GEOMETRY · SIZE · HOLES
InstrumentFixed anglesSizesCircle templatesConfigurationsLive state
30°/60°/90° Template Triangle Ruler$6.44+30° · 60° · 90°8" — 14"Varies by size · verified diagram4 offeredChoose configurationView product 45°/45°/90° Template Triangle Ruler$6.56+45° · 45° · 90°6" — 12"Varies by size · verified diagram4 offeredChoose configurationView product 06 — Specialists
DECIDED BY JOB · SCALE BEHAVIOR
InstrumentExact jobScale behaviorSelection logicConfigurationsLive state
Aluminum Agate/Pica Ruler$10.50+Publication layoutInch · pica · agateChoose publication scale and length3 offeredChoose configurationView product Aluminum Center-Finding Ruler$3.45+Find centersZero at centerChoose working length6 offeredChoose configurationView product Aluminum Cuff Ruler$4.55+Mark cuff depthRule width is the referenceChoose width · constant 12″ length5 offeredChoose configurationView product 07 — Black engraved
DECIDED BY UNIT · EDGE · DIRECTION · LENGTH
InstrumentUnitWorking edgeReading directionConfigurationsLive state
Black Anodized English/Metric Ruler$35.00+Inch + cmEither edgeEither direction5 offeredChoose configurationView product Black Anodized Left-to-Right Bottom Edge Rule$7.99+InchBottom edgeLeft → right8 offeredChoose configurationView product Black Anodized Left-to-Right Top Edge Rule$7.99+InchTop edgeLeft → right8 offeredChoose configurationView product Black Anodized Right-to-Left Bottom Edge Rule$7.40+InchBottom edgeRight → left8 offeredChoose configurationView product Black Anodized Right-to-Left Top Edge Rule$7.99+InchTop edgeRight → left9 offeredChoose configurationView product Black Metric Left-to-Right Bottom Edge Rule$11.63+Metric (cm)Bottom edgeLeft → right4 offeredChoose configurationView product Black Metric Left-to-Right Top Edge Rule$13.38+Metric (cm)Top edgeLeft → right4 offeredChoose configurationView product Black Metric Right-to-Left Bottom Edge Rule$11.63+Metric (cm)Bottom edgeRight → left4 offeredChoose configurationView product Black Metric Right-to-Left Top Edge Rule$13.19+Metric (cm)Top edgeRight → left4 offeredChoose configurationView product 08 — NO RULES
DECIDED BY UNIT · LENGTH · WIDTH · BACKING
InstrumentUnit systemLength rangeWidth / backingConfigurationsLive state
