Capacitance and inductance calculator- converts between most forms of impedance

Balancing rotating objects like motors and fans (xls spreadsheet)

Custom arc template generator for phono cartridge alignment (also prints strobe disks)

Adaptation of 1951 USAF lens resolution target (pdf file coming soon)

How to build a capacitance bridge (pdf file)

Threads, Changegears and Dividing Head (geared, pun intended, to my Logan but easily applied to any lathe- many useful inch and metric charts for the model maker- xls spreadsheet)

Program to calculate exact 3-wire screw thread measurements (zip file)

Info and Review of Thorens TD 295 Mk III turntable (pdf file)

V1.48 of A Scanning Utility for the HP8903B audio analyzer / Prologix interface only (zip file)

Silicone mold casting of new gears for the HP8640B RF signal generator (pdf file)

Brief results of turntable thrust plate material tests (xls spreadsheet)