Functions and modules for creating metric (ISO) and English (UTS) standard screws and nuts. Included is a function for calculating the standard dimensions of screws including the tolerance values that ...

环规、牙规、三线规校正 CALIBRATION FOR RING GAGE, ATHREAD GAGE, 3 WIRE GAGE 螺丝、螺帽品检量测仪器 FASTENERS INSPECTION AND MEASUREMENT INSTRUMENTS 螺丝、螺帽成型攻牙专用油 FORMING AND TAPPING OILS FOR BOLTS AND NUTS FORMERS ...

This file provides functions and modules that construct shapes from a list of cross sections. In the case of skin() you specify each cross sectional shape yourself, and the number of points can vary.