French Curve

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french curve

[¦french ′kərv]
(graphic arts)
A guide, usually made of clear plastic, used for making regular, irregular, and reverse curves in mechanical drawings and illustrations.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

French Curve


(also template; see [2] below). (1) A drawing instrument for drawing or checking curved lines in drafting or design work; they may have fixed or variable curvature. French curves with fixed curvature are wooden, plastic, or less frequently metal plates with a curved edge. A curve with variable curvature is usually a steel guide bar with an arrangement for varying its configuration (curvature).

(2) Template, a scaleless measuring instrument or layout device (pattern) for checking or outlining curved contours of shaped parts. It is used in machine building and shipbuilding. It is a steel plate with a working edge that describes the inverse (complementary) profile of an object. Measurements are usually made by estimating the width of the gap between the template and the object with a clearance gauge.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The nifty French curve "hooks" on the inside of the pocket, leaving the holster in the pocket when the gun comes out.
Connect the two lines using a French curve ruler to create the neckline opening (1)
In the other two small works, which deploy arcs and semicircles of paper, it is as if a draftsperson has managed to physicalize rather than merely represent space-time, using little more than construction paper, scissors, glue, and a French curve. The circles and ellipses of earlier works now sometimes spiral open, abandoning the simplicity of mere inside and outside.
Smooth the lines using a French curve. Label the right short edge as "Cut on fold" (2).
SUPPLIES * Short-sleeve button-down shirt pattern with horizontal bust darts b vertical waist darts (such as McCall's 6750) * Cotton poplin fabric (amount according to the pattern envelope) * Lightweight fusible interfacing & notions (according to pattern envelope) * All-purpose thread * Pattern or tracing paper * Rulers: French curve b straight * Clear tape PREPARE Cut out the pattern pieces.
An airy middle level is punctuated by floating cloudlike forms in filmy gray charcoal; the overlapping curves and evanescent ghostly images are a result of snapping a french curve over a surface dusted with charcoal powder.
Using a French curve, draw a curved line connecting points C and F; label the line "armhole."
Using a French curve, draw a slightly curved line from this line to the upper-edge line end point; label the line "neckline." Repeat to draw a curved line from the upper-edge line end point to the waistline end point; label the line "armhole."
Draw a line using an appropriate ruler, such as a French curve or yardstick if the desired seam is curved or straight.
SUPPLIES * Top/blouse pattern without darts * Muslin * Pattern paper * Rulers: French curve & straight ALTER Make a muslin fitting sample of the selected pattern.
Draw a vertical line from point I to the E/C line; label as point "J." Using a French curve, draw a curved armscye line from point G, gradually blending into the J/l line.