A simple tool, it comes in 3 different anodized colours - black, purple and blue, and is supplied with a suitable shaft for measuring the motors RPM within the Motor Master.

• 一个简单的工具，它在3种不同阳极氧化膜的颜色-黑色，紫色和蓝色，并提供一个合适的轴测量电机转速与电机硕士学位。