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We wanted a 1:12000 grid slot tool, but they are extremely rare to find, and we tried using a corner marking tool, but they are not nearly as easy to use as the slot tools. The slot tools feature a slot along the vertical axis which make marking a point super quick and they are easy to read. We struggled to find the best tool since most UTM Grid Readers we prefer (also called slot tools) use a 1:24000 grid. See the other pictures for more information. In the main picture (a digital prototype), the pink/red is actually white around the outside edge (in the real life tool), and the slot cut lines are displayed as red lines. However we have been running a larger set of maps using a 1:12,000 scale so we can see more detail. The provided maps are 1:24,000 scale on a UTM grid. The main focus of this event is land navigation. Since 2016 Bison Tactical has participated in a 24-48 hour land navigation race called the Sniper Adventure Challenge. This is the Bison Tactical custom UTM Grid Reader. Some protractors have a satin chrome finish to improve the visibility of the scales.UTM Grid Reader | Military Map Protractor Bevel protractors are often ground and made from stainless steel.
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Bevel protractors are designed for making high-precision measurements and are commonly used for producing mechanical and architectural drawings and by tool makers. As with the regular protractor, the Vernier scale is bidirectional and can be read to either side. The Vernier scale has 24 divisions with 12 divisions on either side of 0 with each division representing 5 minutes. The fixed dial or main scale has four sections with each one graduated from 0 ° to 90 °. Bevel protractors are more accurate than regular protractors as they use a Vernier scale along with a fixed scale. There are variants of this design including a universal precision protractor and a precision universal Vernier protractor with a more technical design. The construction of a bevel protractor consists of a beam, a graduated dial and a blade which is connected to a swivel plate by a thumb nut and clamp.
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The Vernier scale is found underneath the main degree scale and is spaced so it reads at a constant fraction of the fixed main scale.Bevel Protractors:These are able to measure through 360° by using one or two swinging arms that can help measure the angle. In the Vernier scale, each graduation represents 0.02 mm or 1/12 of a degree. This type of protractor is commonly used in classrooms for geometry and in mechanical and engineering-related applications.The Vernier Scale:This is used on protractors to enable them to give more precise and accurate measurements. The semi-circular protractor is used for reading, drawing and plotting angles on paper or charts. On the base of the protractor is a midpoint mark that indicates the position of the highest point of the angle that is going to be measured or the vertex. More durable and typically higher quality protractors can be made of metals such as aluminium or Stainless Steel.Types of ProtractorSemi-Circular Protractor:This protractor has two sets of scales graduated up to 180° in opposite directions enabling angles to be read from two directions. Protractors A protractor is a mathematical instrument often made from clear plastic used for measuring angles in degrees such as the angles of a triangle or a hexagon.