Product Details

• Amazon Sales Rank: #522 in Home Improvement
• Brand: Starrett
• Model: 505A-12
• Dimensions: 1.49 pounds

Features

• 12-inch miter saw protractor with two scales--red "miter cut" scale and black "single cut" scale
• Allows direct transfer of the work angle to the miter saw in 3 steps with no calculations
• Durable 1/4-inch thick aluminum alloy; Teflon O-ring for smooth, precise operation
• 7-inch version also
• 12-inches long; 1-1/2 pounds; 1-year warranty

Amazon.com Product Description
No miter saw is complete without this patented and multiple award winning invention. This is the original and very popular 12-inch model of the Starrett ProSite Miter Saw Protractor. It is now also available in the conveniently smaller-sized 7-inch model, the 505A-7.

The Starrett ProSite Miter Saw Protractor takes error-prone calculations out of the process of miter cuts and other angle cuts. Simply set your saw to the angle that you read on the tool. There are absolutely no calculations. Upside down or backwards, the reading is always correct. These easy-to-use tools have two scales. The red scale and red "Miter Cut" arrow provide the exact miter saw setting for a perfect miter joint, while the black scale and black "Single Cut" arrow provide the exact miter saw setting for fitting a single workpiece to any angle.

The ProSite Miter Saw Protractors save time and reduce waste. They are ideal for carpenters, plumbers, and all building trades which require the measuring and transferring of angles. They are also invaluable for home use and do-it-yourselfers. They are the perfect and essential companion for every miter saw user. Buy both models and cover all your angles!

Customer Reviews

Gotta have one.
I had one of these before but couldn't find it so I bought another. It really comes in handy when your doing crown molding. It saves you from going up and down the ladder a hundred times making trial cuts or wasting a piece of material because the walls aren't built at the angles they're supposed to be. It helps you look like you know what you're doing.

Scale is way off
If you are looking for accuracy, look elsewhere. This scale is off by 1-2° which is unacceptable for anything but rough framing perhaps.

Best layout and fitup protractor I have
Starrett 505A-12 ProSite 12-Inch Dial Protractor

I own a 'pro' design, fab. & welding shop--so, I've got at least 6 other protractors.
However, upon seeing a write up by another fabricator, on Welding Web site--show
and discuss this item---I bought it.

1-It takes the math and headscratching out of figuring mitre joint angles.

2-It's tight, not sloppy and big enough to use very easily for angle fitups and measuring during fitup.

3-It's a Starrett tool (and I have other pricey, Starett items)---which means quality.

4-I'm too poor be able to afford cheap tools.