This is a cute little measuring wheel - get the 1ft diameter version as it can be more accurate than the smaller one. I use this to measure trail distances and compare to GPS readings when satellite coverage is poor. For some reason, this works best downhill, but the measurements in the two directions (uphill and uphill) are pretty close. It seems to track fairly accurately over a known distance or in areas with good GPS coverage. In the Pacific Northwest, if it's wet and you use it on a forest trail, it picks up a lot of pine needles or mud. I lift it up a bit and brush off the dirt with a boot or a rag. I don't think the needles will cause any problems, but I don't want them building up and sealing the mechanism hidden under the handle on top of the wheel.
Komelon ML1212 Meter Man 4 Inch Measuring
8 Review
π Zozen Measuring Wheel with Digital Display and Foldable Feet/Meter - Portable Digital Measure Wheel with Backlit Display, up to 99,999Ft/99,999M. Includes Convenient Cloth Backpack.
7 Review
π Komelon ML1810 Hi-Viz Yellow Measuring Wheel - 6-Inch Accuracy for Feet
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
Kapro 307-08-TMS Try And Mitre Layout And Marking Square With Stainless Steel Blade, 8-Inch Length
18 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
π² Johnson RAS-1B Johnny Square: Professional Aluminum Rafter Square, 7'', Silver - Top Quality with 1 Square
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