•  Model Engineer's companion

'Model Engineer's Companion' is a conversion calculator for Imperial/Metric etc., plus data sheets for popular threads, tables of standard Imperial, Metric, number and letter drill sizes, plus Imperial and Metric sheetmetal and wire gauges etc.

This useful piece of software can be downloaded from the informer site by clicking on the following link:

"MODEL ENGINEERS COMPANION"

After downloading the software, use the BACK button on your browser to return to this page.

• Valve Gear Simulation

A set of programs written by Charles Dockstader from California to help with Valve Gear design.

These programs can be downloaded by following this link:    VALVE GEARS