So I could never understand why people buy expensive squares. I bought this mid-range set based on a book recommendation and am very glad I did. I always use cheap but accurate angles from the hardware store. The advantage of a more expensive square, in my opinion, is the accuracy of the markings on the blade. The markings are thinner and therefore more accurate. They are pressed deeper into the blade than simply painted on the blade; This in turn makes them more accurate as the color tends to rub off or become harder to read over time. Each of the 4 blade edges is marked with different levels of precision, from 1/8" to 1/64". You just can't get that kind of accuracy on a $10 square. So if you only want to get a 90 degree angle and want to measure to within 1/8 inch or maybe 1/16 inch, use cheaper angles. But if you find that this isn't enough, I recommend this set of squares.
Laser rangefinder Xiaomi ATuMan Duka LS-P Laser Range Finder 40 m gray
119 Review
Thickness gauge CarSys DPM-816 PRO (Fe/nFe)
31 Review
Laser level Zitrek LL1V1H
36 Review
Cullaby Contour Gauge: 10 & 5 Inch Duplications For Perfect Templates Of Curved And Odd Shapes, Plus Bonus Angle Ruler & Carpenter Pen!
23 Review
π₯ Advanced Testo Wireless Hot Wire Anemometer Technology
4 Review
π§ UEi Test Instruments DAFM3B Digital Multimeter
6 Review
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review
π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review