螺距

直尺（角尺、游标卡尺、内径和外径千分尺、钢卷尺、塞尺、千分表、深度千分尺、线规、半径规、螺距规）是一种常用量具。

red thread mark

thread saw handle

rolled thread

double thread shoe border stitcher

looper thread bobbin, bobbin for lower thread

acme screw thread【机】;trapezoidal thread【机】

basting thread

metric coarse thread