![]() ![]() Vernier Scale gives the remaining angle in minutes. Vernier Scale: The vernier scale is fixed on the swivel plate and it moves with the swivel plate.This magnifying glass is used to see the value of the angles in the main scale and the vernier scale more clearly. Magnifying Glass: The swivel plate also has a magnifying glass present over the vernier scale.This swivel plate has a vernier scale which is integrated into it. Swivel plate: The swivel plate rotates over the dial.With these values along with the least count of the Vernier bevel protractor, we can calculate the Reading. this reading is noted as the Vernier scale reading. While taking a measurement, The Zero line on the vernier scale shows the reading on the main scale, called the main scale reading.Īt somewhere the divisions on the vernier scale will coincide with the divisions on the Main scale. One division on the Vernier scale = 1.91666° = 1° 55′ (one degree 55 minutes).Īs similar to the vernier caliper working principle as Zero on the vernier scale moves on the main scale. On the Main scale, the same portion is represented as 23° (12 divisions on the vernier scale = 23° on the main scale). Jonas took out a number-two pencil, a ruler, and a protractor to draw lines on my x-rays.One division= 60/12 = 5 minute. “Turn your head as far as you can to the left,” he said as he pulled out a clear plastic protractor that would measure how much rotation I had in my neck.ĭr. Jonas enthralled me with a protractor and precalculus. Kelly allegedly pulled out the instrument, described as a protractor or compass, and tried to stab the victim.Ī 14-year-old Naples High School student faces felony charges of aggravated battery for allegedly attacking another teen at the Coastland Center mall with an instrument described as a protractor or compass.īut Dr. As all angles are not obtainable by the square or bevel, a protractor is a most desirable addition to the stock of tools. That is, hold the protractor, which is "D" shaped, in the same orientation as the letter "D". ![]() noun drafting instrument used to draw or measure angles.noun anatomy A muscle that extends an organ or part opposed to retractor.įrom WordNet 3.0 Copyright 2006 by Princeton University.noun surgery An instrument formerly used in extracting foreign or offensive matter from a wound.noun A circular or semicircular tool for drawing or measuring angles.noun An adjustable pattern used by tailors.įrom Wiktionary, Creative Commons Attribution/Share-Alike License.noun (Anat.) A muscle which extends an organ or part - opposed to retractor.noun (Surg.) An instrument formerly used in extracting foreign or offensive matter from a wound.It is of various forms, semicircular, rectangular, or circular. noun A mathematical instrument for laying down and measuring angles on paper, used in drawing or in plotting.noun One who, or that which, protracts, or causes protraction.noun An adjustable pattern, agreeing in proportion with particular measurements, used by tailors in cutting out garments.įrom the GNU version of the Collaborative International Dictionary of English.noun In anatomy, a muscle which protracts, or extends or draws a part forward: the opposite of retractor.noun Anatomy A muscle that extends a limb or other part.noun A semicircular instrument for measuring and constructing angles.From The American Heritage® Dictionary of the English Language, 5th Edition.
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