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#Protractor angles full#
#Protractor angles tv#

Second, make sure that TV is extended enough such that it goes through the edge of the protractor, then read the degree measure on the inner set of numbers where side TV intersects the protractors edge.

First, place side TS so the vertex is inside the hole (the midpoint) of the protractor and TS lines up with the 0 line to the right.

Whichever side you line up with the zero-degree line determines which set of numbers to use. When using a protractor, notice that the outside set of numbers goes from 0 to 180 degrees where the 0 is on the left side of the protractor while the inner set goes from 180 to 0 degrees where 0 is on the right side of the protractor. Most protractors measure angles in degrees (°). Folds for easy transport.Home / geometry / angle / protractor ProtractorĪ protractor is a tool used to measure angles. Or you can set it to any angle between 0 and 180 degrees. Improving on the old 4-foot squares that could only mark 90-degree cuts in drywall, OSB, plywood, and other sheet goods, this adjustable square has markings for 30, 45, and 90 degrees. You've just set the exact miter angle.Ībout $15, Rockler 10. Now take the guide to your miter saw, brace one leg against the fence, then line up the saw blade against the tab. Internal gears position a protruding metal tab to bisect the angle. Press this simple tool's legs flush against any inside or outside corner. Comes with a table of compound miter angles.Ībout $90, Starrett 9. Place each leg on an adjacent wall, and arrows at the pivot show the degree setting you need to make a butt joint, or the angle to miter each piece. Starrett's updated combination protractor takes the guesswork out of cutting crown molding. The tool comes with two vials so you can be sure it's level on both sides of the corner as you take a reading.Ībout $130, Bosch 8. Press each of its legs into a corner and get a digital readout to a tenth of a degree. Digital Protractor Photo by Mark Weissīosch's digital angle finder is arguably the most accurate tool we tested, and certainly the most idiot proof. The rotating 180-degree head locks the rule at a desired angle or tells you the exact angle of an existing bevel.Ībout $113, Starett 7. Starrett's cast-iron protractor head with chromed-steel rule, on the market since 1908, is a classic machinist's tool for anyone who values precise layout marks.

Or set a desired angle and align the bevel's blade with it.Ībout $32, Lee Valley 6. To find out, align the bar on this guide with the T-bevel's blade and read the angle to half a degree. T-bevels, which have no markings, are great for matching and transferring angles but can't tell you exactly what those angles are. To the usual wing nut) so either side can lie flush as you're marking your layout.Ībout $45, Lee Valley 5. This T-bevel's blade locks in place with a recessed bronze latch (as opposed Lock the T-bevel's sliding blade against any angle, then use the tool to copy that angle onto your work or to set the angle of a saw blade. The 12-inch blade can't wobble or pivot as it guides your pencil or your saw.Ībout $12, Empire Level 4. Lock the triangle at the desired degree, then press it and a fixed knob on the handle against the edge of the work. This layout weapon for wide pieces of lumber has a sliding knob along its semicircular arc. Stick with the aluminum alloy version, not plastic: It's more rugged, and the stamped numbers are easier to read. Use it to find angles, mark cutlines, and as a crosscut guide to keep your saw straight.

#Protractor angles full#

Simple, durable, and full of roof-layout info, the Speed square is a carpenter's classic. Spirit vials help you check for level, as when establishing the angle to cut siding where it meets a roofline. The aluminum Pivot Square has a locking, adjustable leg that firmly holds any angle from 0 to 90 degrees, so you can make repeated, consistent mark or guide your circular saw through marks or guide your circular saw through angled crosscuts. The old adage-"Measure twice"-still applies. So before you make another unsightly cutting mistake, put down that caulk tube and pick up one of the measuring tools. The right angle-finding tool is your protection against loose joinery and expletive-filled outbursts, whether you're doing something big like building a garden shed, or simply tackling around-the-house maintenance tasks like measuring for a storm window. Likewise, framing carpenters use squares to determine the angles for rafters, rakes, and stair stringers and furniture makers consult their protractors before laying out dovetails. How is it that finish carpenters do trim jobs daily without suffering angle-induced embolisms? Easy-because they rely on miter guides, not their eyeballs, to tell them where to cut.