The yo-yo ball rope extension test instrument makes the length measuring system( to calculate the elongation length) and the yo-yo ball installed in the same spindle for rotating.

The test process is controlled by intelligent MCU, read the turns of the trolling reel through the encoder pulse, calculate the increment of each circle by considering the line of the reel increasing on the first circle. And improve the measurement accuracy value by taking multi-point to calculate.

a) Interface display: rotating speed, length, start/stop/reset. (digital display, page display the speed and length);

b) Length measuring system, DC motor with speed adjustment, intelligent MCU control.

c) Wall fixing suport or floor stand seat(adjustable)

d) Encoder and intelligent control signal transmission system

e) Rotating speed:1-150(adjustable)  

f) Stroke:0-1000MM(adjustable)

g) Standard: ASTM963-08