Lock the protractor by turning on the Locked property in its track menu. ![]() Locking the protractor prevents it from making any changes to the scale. You can attach to any point mass track including a center of mass, particle model or data track.Īttaching the points automatically unfixes the protractor. item in the protractor's track menu, then select the desired point mass tracks from the dropdown lists in the Attach Points dialog. To attach points, choose the Attach Points. This can be accomplished by creating a protractor and attaching its ends and/or vertex to the point masses. It is sometimes useful to measure the distances and angles determined by independent point mass tracks. Uncheck the Fixed Position checkbox in its track menu to allow these properties to vary independently from frame to frame. Protractor/Angle Finder, Use To Measure & Mark The Degrees Of An Angle On Outside, Inside & Sloped Angles, Fine Black Graduations From 0 Degree To 80 Degree. For finer control you can drag away from the vertex-a dashed line continues to connect the drag point to the arc arrow as shown.īy default, the protractor has a fixed position-that is, its vertex and arm positions are the same in all frames. Set the arc to a specific angle by clicking either the angle readout or toolbar field and entering the desired angle.ĭrag the center of either arm to move the entire protractor without changing the angle or orientation.ĭrag the arc arrow to rotate the entire protractor about its vertex without changing the angular arc. The arc arrow shows the direction (cw or ccw) of the arc and the angle readout and toolbar angle field display its value (positive if ccw, negative if cw). New protractors are placed at the center of the current viewport.Ĭlick and drag the vertex or circular end of either arm to adjust the arms. You should find that the angles measure as follows: angle measurements. Multiple protractors can be created as needed. Measure angles 1, 2, and 3 using a protractor to follow the steps above. To create a protractor, click the arrow on the Measuring Tools button and choose New|Protractor from the popup menu. The ruler diameter is determined by the base length, and larger diameters show finer angle resolution. ![]() ![]() To hide the ruler, uncheck the Ruler box on the toolbar. It has a vertex, a base (solid) and measuring (dotted) arm, an arc arrow and an angle readout that displays in degrees or radians.Ī full 360-degree ruler (right image above) is also drawn by default. The readings can be taken either to the right or to the left, according to the direction in which the zero on the main scale is moved.A protractor track is a tool for measuring angular arcs. Step 3: Now, observe carefully and note down marking. Step 2: After placing the protractor accurately, we read the measure of the angle, since we are measuring in. Place the zero of the protractor accurately on. Since the spaces, both on the main scale and the Vernier scale, are numbered both to the right and to the left from zero, any angle can be measured. Step 1: Suppose an angle given AOB, whose measure we need to find out. To measure an angle of over 90°, subtract the number of degrees as indicated on the dial from 180°, as the dial is graduated from opposite zero marks to 90° each way. To measure an angle between the beam and the blade of 90° or less, the reading may be obtained direct from the graduation number on the dial indicated by the mark on the swivel plate. When the edges of the beam and blade are parallel, a small mark on the swivel plate coincides with the zero line on the graduated dial. The bevel protractor consists of a beam, a graduated dial and a blade which is connected to a swivel plate (with Vernier scale) by thumb nut and clamp. It reads to 5 arcminutes (5′ or 1 / 12°) and can measure angles from 0° to 360°. The 29 ANGLE-IZER Plastic Protractor facilitates measurement and marking of inside, outside and sloped angles. Line up one side of the angle with the zero line of. The bevel protractor is used to establish and test angles to very close tolerances. How to measure an angle with a protractor Place the midpoint of the protractor on the vertex of the angle. The Protractor tool ( ) enables you to measure angles. Universal bevel protractors are also used by toolmakers as they measure angles by mechanical contact they are classed as mechanical protractors. With the Tape Measure tool ( ), you can measure a distance and set precise guide lines or guide points. It has wide application in architectural and mechanical drawing, although its use is decreasing with the availability of modern drawing software or CAD. Sometimes Vernier scales are attached to give more precise readings. ![]() A bevel protractor is a graduated circular protractor with one pivoted arm used for measuring or marking off angles.
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