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 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 Calculated Industries #6575 DigiRoller Plus III 12.5 Inch Estimators Electronic Distance Measuring Wheel with Large Backlit Digital Display - Measure Feet, Inches, Meters, Yards; Includes FREE Carrying Pack
7 Review
Scuddles Measuring Wheel Distance Measurer - 10,000 Feet With 25Ft Tape Measure For Yards And Lawns
16 Review