does this tool work so that you can get an angle and then it will let you know the degree on saw?

that's what it is designed to do, so yes if apply it to the angle you want to cut you just have to make the cut at that angle

Will this lay flat on a table, even with the wing nut?

The square head will lay flat on a table surface, the square head measure read plate is 1.22mm or 3/64'' thick thus leaving the measure indicating arm that much above the surface.Hope this answers the question and is helpful. Oscar

Are the edges of the protractor rectangular plate with the graduation truly square?. Can you use any edge adding 90 degrees when using the sides?

First question answer is yes, I checked mine at 90 degrees and 45 degrees. Second question answer yes, I have drawn two lines parallel using each side of the protractor arm. The markings run left to right to left and left to right on two levels. Trust this explanation has answered your questions.

What are the dimensions of the bar... ?

The bar, from the pivot point to the extremity is 150 mm long, 15 mm wide and about 1.5 mm thick made of stainless steel The angle measuring plate measures 90mm by 52mm.

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📏 Measure Like a Pro, Every Angle Covered!

BUILT TO ENDURE - Crafted from stainless steel for unmatched strength, precision, and rust resistance in any workspace.
CUSTOM FIT ANGLES - 6-inch adjustable arm locks instantly with a knurled thumb nut for quick, reliable angle setting.
PRECISION THAT LASTS - Deeply etched graduations from 0° to 180° won’t fade—ensuring accuracy project after project.
ANCHOR WITH CONFIDENCE - Square head design secures the protractor firmly for flawless angle measurements every time.
ESSENTIAL FOR PROS HOBBYISTS - Trusted by students, carpenters, machinists, and woodworkers to measure, transfer, and set bevels with ease.

The General Tools 17 Square Head Stainless Steel Angle Protractor features a durable stainless steel build with a 6-inch adjustable arm and deeply etched 0° to 180° graduations. Designed for precision and longevity, it anchors securely with its square head, making it an essential tool for professionals and hobbyists needing accurate angle measurements and transfers.

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NT$1730

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Manufacturer	General Tools
Part number	17
Item Weight	63.5 g
Product Dimensions	20.32 x 5.08 x 0.25 cm; 63.5 g
Item model number	17
Size	Pack of 1
Color	Stainless Steel
Style	Square Head
Material	Stainless Steel
Pattern	Angle Finder
Power source type	Hand Powered
Item Package Quantity	1
Number Of Pieces	1
Measurement System	Inch
Measurement Accuracy	+/1%
Included components	STEEL PROTRACTOR
Batteries Included?	No
Batteries Required?	No

General Tools 17 Square Head Stainless Steel Angle Protractor, 0 to 180 Degrees, 6-Inch Arm

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