I've always used spirit levels and very rarely my iPhone to level things, but with both you don't have a way to 'set' the spirit level. This allows you to set the zero plane anywhere you like, making finding rafter angles 10 times easier than digging up a combination angle and measuring.
Laser level HiLDA 4D/16 set 4
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Kapro 905 Condor - Professional Magnetic Box Level + High Contrast OPTIVISION Red Vial - 24
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DigiPas DWL80PRO: Compact Digital Level & Angle Gauge - Accurate Protractor, Bevel Gauge, and Angle Finder, 0.05Β° Sensitivity, 4 inch Pocket Size
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π SKIL 24-Inch Digital Level - LV941901
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Kapro - 353 Professional Ledge-It Try & Mitre Square - For Leveling And Measuring - Features Stainless Steel Blade, Retractable Ledge, And Etched Ruler Markings - 12 Inch
23 Review
π Johnson Level and Tool 400EM-S 12-Inch Heavy Duty Metal Combination Square for Professionals, with Inch/Metric Measurements, Silver - 1 Square
8 Review
TV bracket Kromax DIX-18 black
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Triangle Group TR918 225/45 R18 95V summer
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