I specially ordered a mechanical measuring wheel to keep it simple. I've observed battery powered gauges in the past, they seem to change readings at times, no need to fiddle with batteries. The big wheel worked for my project which was on a very uneven farm, grass, pasture.
π ROLATAPE RT204 Dual 4-inch Measuring Wheel: Accurate and Efficient Yellow Survey Tool
7 Review
π Keson RRT12 Top Reading Center Line Measuring Wheel - Accurate Handle Brake & Reset - 3-Foot with ft. & in. Graduations
9 Review
π Yellow 12.5-Inch Aluminum Measuring Wheel (Ft/In) by Rolatape RT312
8 Review
π Komelon ML1810 Hi-Viz Yellow Measuring Wheel - 6-Inch Accuracy for Feet
8 Review
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 CAMWAY 6 Inch Digital Caliper with LCD Display, Electronic Vernier Caliper, 150mm Stainless Steel Feeler Gauge, Plastic Digital Caliper Set for Zero Setting Inside/Outside Diameter, Depth, and Step Measurement Tool
3 Review
TV bracket Kromax DIX-18 black
52 Review
Kapro 307-08-TMS Try And Mitre Layout And Marking Square With Stainless Steel Blade, 8-Inch Length
18 Review