The box says "square" at 0.0015 I would say they are. Revain's description says the square at 0.0008 isn't that close. Both glide a little rough, I see some light trying to match them. I'd happily give a lower start for the receipt info but for the price they will do the woodworking work. Again, don't buy if you want something more specific.
Cullaby Contour Gauge: 10 & 5 Inch Duplications For Perfect Templates Of Curved And Odd Shapes, Plus Bonus Angle Ruler & Carpenter Pen!
23 Review
Laser pointer Green Laser 303
31 Review
Thickness gauge CarSys DPM-816 PRO (Fe/nFe)
31 Review
Accurately Measure Angles And Levels With GemRed XVB Digital Gauge Level Box For Pipe Conduit
25 Review