Rotation with super grinding ,slide with v-shapped rail ,elastic couplings have adopted import high-quality products,supply quality assurance .The design of the limited switches and zero switch and standard interface are converient for output of sigal ;Equipped with handwheel in the back of motor ,achieve manual adjustment;Standard hole is convenient for combined-dimensional . The height is 30mm,the largest height is only 44mm.Application for little height of space,little travel,high resolution fields