protractor


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protractor

1. an instrument for measuring or drawing angles on paper, usually a flat semicircular transparent plastic sheet graduated in degrees
2. a surgical instrument for removing a bullet from the body
3. Anatomy a former term for extensor

Protractor

 

an instrument used to construct and measure angles in sketches and on charts. A protractor consists of a straightedge and a semicircle that is graduated in degrees from 0° to 180°. The precision of a protractor increases as its size becomes larger: the larger the semicircle, the smaller the value of a division. Protractors for very precise construction and measurement of angles—for example, in navigation—are equipped with a transparent straightedge and a goniometric vernier that rotates about the midpoint of the diameter of the semicircle.

protractor

[′prō‚trak·tər]
(engineering)
A semicircular instrument used to construct and measure angles formed by intersecting lines of a plane; the midpoint of the diameter of the semicircle is marked and serves as the vertex of angles constructed or measured.

protractor

An instrument graduated in angular degrees for measuring or laying out angles.

protractor

protractorclick for a larger image
A navigational instrument for measuring angles (headings, tracks, and bearings) on a map or a chart.
References in periodicals archive ?
We have had problems with units marking or engraving the PRO 360 and PRO 3600 digital protractors (NSN 5210-01-494-0899 and NSN 5210-01-418-0671).
Protractor was beaten just over two lengths which was still a creditable run, particularly as he still looked to have a little bit of scope.
Star performance Protractor, a Galileo half-brother to the smart Danehill Destiny, scored on his debut and is one to keep an eye on Results and analysis start page 102
Think of the Al as a protractor and treat zero pitch and 10-degrees nose low as your scale limits.
The new protractor eyepiece measures 360[degrees] to an accuracy of 5' using a rotary vernier and rotatable crosshair.
For contractor Mike Kilpatrick, the ProSite Protractor from Starrett means finishing jobs taster and making clients happier.
At New York's Kennedy airport recently, an individual later discovered to be a public school teacher was arrested trying to board a flight while in possession of a ruler, a protractor, a set square, a slide rule and a calculator.
A simple tool based on the concept of a protractor, the DuPont[TM] AccuAngle protractor is designed to improve metallic and pearlescent color matching communications and controls.
Alman, research fellow in DuPont Automotive Coatings Systems and the inventor of the AccuAngle metallic color protractor.
tape ** 1 sheet of waxed paper, 22 cm by 28 cm ** glue ** pencil ** 1 piece of felt, 22 cm by 28 cm ** 10 small pebbles ** 1 box of sugar ** 1 bag of flour ** 1 box of mashed-potato flakes ** protractor
In Figure 1-14, the protractor is measuring a 25-degree angle.
Typical tools used by clothing suppliers and the mill include optical magnification devices (with or without digital cameras), caliper gauges, a protractor, a ruler, a long measuring tape for sections, a permeability measuring gauge, fabric and felt mending or sewing kits, good flashlights, levels, and a sealing iron," noted Steve Carmichael, sales/service engineer at Weavexx, Wake Forest, North Carolina.