Thursday, September 3, 2015

Details on Half Circle Protractors

Half circle protractor products are drafting supplies that are commonly used by professionals who work in both the engineering and architecture fields. These types of protractors are capable of measuring 180-degree and 360-degree angles. These tools do not, however, measure 30, 45, 60 and 90-degree angles. People who need useful tools for mathematics and drafting reasons often invest in convenient protractors.

Protractors are commonly seen in the majority of educational institutions out there, from junior high schools to colleges. If a teacher or professor has a science or geometry course to instruct, she may require her pupils to use protractors. Not only can protractors easily measure angles, but they can also easily draw them. The bulk of protractors in existence is produced using clear plastic. They also typically feature printed graduations. The graduations on protractors are often die-stamped and black.

When people need to buy protractors for any reason, they generally have a variety of options available to them. Thru-angle, C-Thru, and Alvin brand protractors are all extremely popular options.

Half circle or semi-circle protractors have graduations of 180 degrees. Full circle protractors, on the other hand, have graduations of 360 degrees. True angle bevel protractors, last but not least, are equipped with pairs of swinging arms. These swinging arms have measurements of 360 degrees and work well for people who need to make extremely exact measurements. These types of protractors also work well for woodworking purposes. If a person has an upcoming woodworking job to do, then he might want to invest in a true angle bevel protractor.

Beveled outer edges are another convenient feature frequently seen in half circle protractors. These kinds of outer edges are useful because they enable people to draw in manners that are significantly neater and more exact.

Many protractors come with center cuts. Center cuts are yet another perk of these tools because they give people the chance to experience finger lift benefits.

Protractors are commonly made using clear laminated PVC (polyvinyl chloride) materials. Not all protractors are produced using the exact same materials, however. These tools run the gamut.


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