Measuring Tool
From Amazon
Bosch Professional 601074000 Measuring Wheel GWM 32 (wheel diameter: 31,85 cm, circumference: 1 m, range: 9999,9 m) , Blue
Conrad Electronic
Bosch Professional GWM32 Perambulator 9999.9 m
Travis Perkins
Bosch GWM32 Measuring Wheel with Telescopic Handle