n.翼形螺钉；拇指夹
Attach brass valve arm to plastic valve arm with thumbscrew provided. Make sure serrations mesh properly. 用所提供的翼状螺丝将黄铜阀门臂附加到塑料阀门臂上。确保锯齿啮合适当。
On the back of the tailstock is a third thumbscrew that locks the tailstock in place on the dovetailed ways. 在背部的尾架是第三thumbscrew认为，锁尾架在地方上配合的方式。
One of a series of small ridges or grooves on the surface or edge of a metal object, such as a thumbscrew, to aid in gripping. 滚花金属物体表面或边缘上的一系列小峰或凹槽，如指旋螺钉，使更容易握紧
There is a retractable 156mm diameter dewcap/lens shade with a thumbscrew lock that slides smoothly over the tube without scratching. 用一个平滑地翼形螺钉锁定，绝没有擦痕。可缩回的156毫米直径包括遮光罩。
A small, round tool post holds a 1/4" square HSS cutting tool, which is held in place with a simple threaded thumbscrew. 一小，圆工具后持有1 / 4 “广场高速钢刀具，这是在地方举行一个简单的线程thumbscrew 。
