The hurdle can be
adjusted to a height of **2, **0, **4, **0 or ***7
mm.
Operation method: adjust the hurdle to a proper height by holding
the hurdle plate with both hands and stepping on the wire
tensioning unit to retract the limit marble. With height
adjustment, the counterweight can be properly adjusted to prevent
hurdle from falling if exposed to a force less than 3.6kg. However,
the hurdle cannot withstand a force greater than 4kg.
The hurdle is designed with steel
wire and fixed pulley to achieve simple operation,
