不錯喔! simon 軸心到長螺絲孔的距離多少
The distance is 22.4cm. Right! Sir.
I'm wrong, must redo.
Accord
22.4cm is OK
neednt redo it
try it first
I use this distance for the metal tracer plate is quite correct
if too fast or too slow just control the time with rotation
for example 13 (faster)or
17(slower) seconds for a right angle rotation