Measuring Wheels

ROLLER BOY

Roller Boy
SO EASY TO SET UP AND OPERATE, ANYONE CAN DO IT.

ROLLER BOY FROM YAMAYO.......... A MORE ACCURATE, MORE AFFORDABLE PRECISION MEASURING WHEELS. VERSATILE USE such AS...

Road construction, Civil engineering projects, Records or prescriptions of traffic accidents, Recreation events, School use materials, Gardening & golf-course layouts, Gas & water piping, Rail track, Lumbering, Pipeline and more!!!
Grip easy to handle and Arrow-headed plate for zero setting.

FEATURES:

  • Easy to set up and can operate by one person.
  • Precision 5 digit large counter (housed in sturdy ABS case) to read out easily.
  • Adjustable telescopic aluminum handle to your comfortable level by twisting, pulling up and pushing down.
  • Arrow-headed plate for zero setting.
  • Wide tire (28mm) used for stable measurement.
  • Tire made of heatproof and durable rubber.
  • Less wobbly wheel as the axle fixed at 2 points in the case.
HOW TO USE & PACKAGING
RB20S/RB20SS
MODEL WHEEL MIN.GRAD.
RB20S/RB20SS Single 10cm
MAX. DISTANCE. WHEEL DIA. WEIGHT
10km 20cm 620g
RB20S1
MODEL WHEEL MIN.GRAD.
RB20S1 Single 1cm
MAX. DISTANCE. WHEEL DIA. WEIGHT
1km 20cm 620g
RB20D
MODEL WHEEL MIN.GRAD.
RB20D Double 10cm
MAX. DISTANCE. WHEEL DIA. WEIGHT
10km 20cm 870g
RB20D1
MODEL WHEEL MIN.GRAD.
RB20D1 Double 1cm
MAX. DISTANCE. WHEEL DIA. WEIGHT
1km 20cm 870g
CAUTION:

Walk moderately during you are measuring. Due to precision mechanism of the counter, push the reset button surely by hand of finger when setting back to zero. (Do not use foot for resetting the button.)

To keep the unit good condition, remove mud or sand after use. Do not use in the rain or in the muddy places for MODEL RB20S1/RB20D1.

Walk at slow pace when measuring for MODEL RB20S1/RB20D1, otherwise fast walk will exceed the limit of the counter's measuring ability.