Single holes can be created by standard size that is available in ZWCAD Mechanical, and the length of the center line can be adjusted.
Powerful Dimensioning makes sizing easy with abbreviated dialog boxes that control and expand only those variables that are relevant to manufacturing, as well as integrate tolerance and fit list information.
With Multiple Dimensions, you can create multiple dimensions with minimal input and appropriate spatial ordering, parallel or symmetric elements.
ZWCAD Mechanical supports multi-edge drawing with different scales, and the size of annotation objects can be changed according to the edge scale.
Reediting is easy, double click on the objects and then the settings in the dialog will change automatically.
The ZWCAD parts library contains screws, nuts, washers, pins, rivets, springs, bearings, etc. Saves you hours of work by picking up parts straight from the library.