1.ReductionRatiohasthefollowingchoice:1/3,1/5,1/10.1/15,1/30,1/50,1/63,1/100,1/150,1/210.1/250,1/298,etc.2.Votaloguehasthefollowingchoice:0.15V,0.5V,1.3V,2.4V,3.0V,3.3V,4.5V,5.0V,6.0V,9.0V,12.0V,etc. 14.微型噴射巡航導彈發射平臺.15.微型火車鐵路變軌16..精密水電儀器儀表.17.精密醫療儀.18精密電動玩具車,玩具模型.19.電子門鎖20.手提電腦.21.自動柜圓機22.自動窗簾23.微波爐轉盤24.煤氣安全門閥25.定時器 　　Spurmetalgearmotors