Coin-sized Rollbe measuring wheel can be kept in a purse or pocket
Trundle Wheel
Digital Measuring Wheel Feet Meter Outdoor Walking Distance Portable Tool | eBay
AIRAJ Measuring Wheels, Distance Measuring Wheel 0-99,999.9m, Metric and Inch Switching,Digital counting device for night use, with tape measure,Stand and Storage Bag : Amazon.co.uk: DIY & Tools
PrimeMatik - Distance measuring wheel with folding handle 320 mm and height 810 mm: Amazon.co.uk: DIY & Tools
Measuring Wheels - Measuring Tools - Homedepot.ca
Measuring Wheel - Heavy Metal Trade Tools
Measuring Wheels - Athletics Direct
PrimeMatik - Distance measuring wheel with folding handle 320 mm
Toolpack Distance Measuring Wheel 10000 m 314.500
Trundle Wheel - Science Equipment used in School and Education - Preproom.org