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Measuring Wheels

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.
Roller Boy
FEATURES:
HOW TO USE & PACKAGING

RB20S/RB20SS
MODELWHEELMIN.GRAD.
RB20S/RB20SSSingle10cm
MAX. DISTANCE.WHEEL DIA.WEIGHT
10km20cm620g
RB20S1
MODELWHEELMIN.GRAD.
RB20S1Single1cm
MAX. DISTANCE.WHEEL DIA.WEIGHT
1km20cm620g
RB20D
MODELWHEELMIN.GRAD.
RB20DDouble10cm
MAX. DISTANCE.WHEEL DIA.WEIGHT
10km20cm870g
RB20D1
MODELWHEELMIN.GRAD.
RB20D1Double1cm
MAX. DISTANCE.WHEEL DIA.WEIGHT
1km20cm870g
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.