Starrett 505A-7 ProSite Protractor

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Manufacturer: Starrett

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Brand: Starrett
Manufacturer: Starrett
Model: 505A-7

Features
7-Inch miter saw protractor with two scales-red -Inchmiter cut-Inch scale and black -Inchsingle cut-Inch scale Allows direct transfer of the work angle to the miter saw in 3 steps with no calculations Features durable 1/4-Inch thick aluminum alloy and reflon O-ring for smooth, precise operation 12-Inch version also available to cover 7-Inch long; 1-1/2-Pound; 1-year warranty

Accessories
Measuring, Marking, and Layout: A Builder's Guide This Old House (1-year)

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Editorial Reviews:

Takes error-prone calculations out of the process of miter cuts to ensure perfect miter joints every time! Simply set your miter saw to the angle that you read. Upside down or backwards, the reading is always correct. Features two scales: red scale and arrow show the angle for a miter joint, while the black arrow and scale provide the angle to fit a single workpiece to an angle. Durable aluminum with Teflon O-ring for smooth and positive operation. Patented.

User Comments about the Starrett 505A-7 ProSite Protractor

I just received this product a couple of weeks ago, and have NOT had a chance to really use it, BUT I have played with it quite a bit and I can already see how it's going to be very useful in the work I do.

I would definitely reccomend this angle finder to anyone who deals with cutting differing angles on a daily basis. It is a tremendous timesaver, and accurate enough to get you very close to the true angle you need to cut.

This little tool has been very useful in calculating mitre cuts. I imagine this would also be useful for the pros as well. It has saved me a lot of time (being a novice carpenter).

Even with this tool, you'll still scribe to fit. It works reasonably well for inside corners, less well for outside corners. This is not quite the tool is should be. And the scale is poor. Overpriced for the capability, in my opinion. Face it, you need a tool that will tell you that the 45 deg angle is really 44 degrees, for example, and the scale is so coarse that it is no better than guessing.

There is no way to adjust the stickers/plates that mark these angles. Mine off by a degree or so. That being said, this really is a must have tool for a miter saw. I have found that this nice little one helps a lot, but most of the time on base trim I am using it on drywall corners.

I think the larger one would get past this spot by getting a longer reach on determining the angle. Just something to consider.If mine was accurate, I would gladly give it 5 stars. Which means that if you have this little guy, you are usually just measuring the most screwed up part of the wall. Considering it is used to gain precision cuts, it would be nice if it was accurate. More like 44 degrees. Not a major deal, but I bought it to gain as much accuracy as possible, so that doesn't help. But if you go to big, you can't get into the small spots.

I didn't even notice mine was off for a long time. If I put it at 0 degrees on the single cut(which is really 90 degrees) the miter cut should be at 45 degrees, and it isn't. I would recommend considering the larger one they sell for base trim. It got me really close to perfect. and that means corner bead, and that means the first six inches or so, is really off due to the mudd used to taper and hide the corner bead.