Circumference = Diameter x 25.4 x 3.1416
2.Wheel size in MM
Circumference = Diameter x 3.1416
2.SET
1) RESET: Reset Distance/Riding time/ Average
speed/Max.speed
2)
To s et v a lues
：
In SET mode, press this
button to set values.
3.Back light(VS-212)
1.Wheel size in INCH
10
11
FIG.M
Back light
16X1.75X2
20X1.75X2
24X1 3/8 A
24X1.75X2
26X1
26X1.5
26X1.6
26X1.75X2
26X1.9
26X2.00
26X2.125
26X1 3/8
47-305
47-406
37-540
47-507
23-571
40-559
44-559
47-559
50-559
54-559
57-559
37-590
1272
1590
1948
1907
1973
2026
2051
2072
2089
2114
2133
2105
Wheel Cir .
(
mm
)
Dimens ion marked in the wheel
2) Setting the Function of : Metric system /
Imperial system, wheel circumference, clock setting
The back light button is positioned on
theback of the VS-212 computer. When
pressed the backlight will display for a
short time (5 seconds).
How to measure the wheel circumference
First Method :
Use a tape measure to find the diameter of the front
bike wheel (Calculation 1), or you can calculate the
wheel circumference according to the wheel / tyre size.
(Calculation 2).
Second Method:
Refer to the table below and locate the wheel circumference
according to the dimensions marked on the wheel.
