Bosch Distance Measuring Unit Circumference 1M Accuracy ±1 dm/100 m GWM 32 PROF The lightweight, handy measuring wheel Ergonomic pistol grip and lightweight aluminium construction for ease of use Telescopic shaft with continuously variable height adjustment for more flexibility and comfort Die-cast aluminium wheel with robust rubber tread for use on any surface Technical Details: Wheel diameter (circumference): 318.5 mm (1 m) Max. measured value: 9999.9 m Handle: Telescopic handle Material: Aluminium Measurement accuracy: ±1 dm/100 m Weight: 1.4 kg