Ian Todd's homepage

Just bear in mind: "Nothing is one hundred percent risk free - nothing. But the gain to be made is worth that risk."John Glenn

How to change the headlamp dip on a Mercedes with Xenon headlights.

For cave surveying, "The InclinomETer", an electronic inclinometer with laser pointer

The SWCC "Earth Resistivity Equipment ", for perhaps detecting cave voids from the surface

The CORDIC method for calculating trig functions on a simple microprocessor

Ian's PGP (GnuPG) public key :
Fingerprint= 6555 A7CF 4EDA D904 5D58 C0DC 6EE2 AC8F 0DB8 B100
My public key in importable form (.asc)

To dispose of spam email, I automatically destroy any messages addressed to webmaster or postmaster. If you need to contact me use this email address