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Westcott KT-8 French Curve Set (3 Pieces)
Westcott KT-8 French Curve Set (3 Pieces)
Westcott KT-8 French Curve Set (3 Pieces)
Westcott KT-8 French Curve Set (3 Pieces)
Westcott KT-8 French Curve Set (3 Pieces)
Westcott KT-8 French Curve Set (3 Pieces)
Westcott

Westcott KT-8 French Curve Set (3 Pieces)

★★★★★4.6 (33 reviews)

Three precision-matched French curves in clear plastic give drafters, sewers, and illustrators smooth, beveled control across every radius.

$10.15*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Westcott KT-8 French Curve Set delivers what most drafters actually need in a three-piece tool: genuine size variety, transparent plastic that doesn't block your sightlines, and edges finished well enough for direct inking. The set isn't pitched at any single discipline — it works equally well on a technical drafting table, a garment-making workbench, or an illustrator's desk. The 5½" piece handles the kind of small-radius curves that appear in logo design and sewing notches; the 6½" bridges the middle ground; and the 12½" covers the broad arcs of sleeve caps, panel seams, and diagram flow lines.

Construction is straightforward: clear, heavy-weight plastic with double-beveled inking edges on both sides of each curve. The bevel is the detail that separates a usable drafting tool from a cheap classroom substitute — it creates a small gap between the edge and the paper surface, keeping ink from wicking underneath and producing a clean, crisp line. The transparency is equally practical: aligning the curve to a partially drawn arc or checking that your line flows smoothly into a straight segment is much easier when you can see through the tool. These are not precision-engraved or graduation-marked curves; they're shape tools, and within that scope they perform reliably for the price.

Key Features

FRENCH CURVE RULER: Heavy weight plastic rulers give you a wide range and variety for your drafting and drawing needs

INCLUDES THREE POPULAR SIZES: 5 ½”, 6½”, 12½”

SMOOTH EDGES: Curve tools with smooth double-beveled inking edges make it ideal for detail work

EASY TO USE: Clear plastic French Curve ruler allows viewing through to the page while you work

DURABLE SCALE: The drawing ruler is made with heavy duty durable plastic which is smooth and not easy to break to ensure long time convenient usage

MULTI PURPOSE: This drafting ruler can be used for detail work, drawing projects, pattern making, and most crafting tasks

Specifications

Brand
Westcott
Model
KT-8
Type
French Curve Set
Pieces
3
Sizes
5½", 6½", 12½"
Material
Clear heavy-weight plastic
Edge Type
Smooth double-beveled inking edges

Pros & Cons

👍 Pros

  • Clear plastic lets you see reference lines beneath the curve as you position it.
  • Double-beveled inking edges prevent ink from bleeding under the ruler — a feature many budget curve sets omit.
  • Three distinct sizes cover both tight detail arcs and broad sweeping curves without redundancy.
  • Durable enough to withstand daily drafting table use without flexing or cracking under normal pen pressure.
  • Multipurpose across drafting, illustration, and garment pattern making.

👎 Cons

  • No storage pouch or case included — the three loose pieces can scratch each other in a bag or drawer.
  • The plastic can pick up graphite smudging over time, which obscures the clear-view benefit without regular cleaning.
  • Not metric-graduated — users working in centimeters will need to verify scale against their own reference.
  • The 12½" curve, while the most versatile, is still limited to moderate radii; very large architectural sweeps may require a longer tool.

Frequently Asked Questions

The set includes 5½", 6½", and 12½" curves. The smaller two handle tight arcs and intricate detail work — garment armholes, logo flourishes, technical diagram callouts. The 12½" covers broader sweeping curves in pattern drafting or large-format illustrations.
Yes. The double-beveled edges are specifically designed for inking — the bevel lifts the ruler slightly off the page so ink doesn't bleed underneath. This makes them more useful than single-edge curves for pen-and-ink drafting.
The clear plastic construction lets you see the lines beneath the tool as you work. This is particularly useful when aligning a curve to an existing partial line or checking symmetry across a design.
Westcott describes the material as heavy-duty plastic designed to resist breaking under normal use. They won't shatter from a desk drop, though sharp impacts against hard surfaces can chip the beveled edges over time.
Yes. The range of radii across the three pieces covers the common curves in apparel pattern drafting — sleeve caps, hip curves, necklines — making this set a practical alternative to dedicated sewing rulers.

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