Victoreen Geiger Counter Review

Victoreen Model Geiger Counter, very useful in theory, design makes it more problematic. Dubbed 'the brick' for obvious reasons.

Sper Scientific Environmental Quality Meter Review

Sper Scientific Environmental Quality Meter, EQM, Extremely useful. Essential for establishing baseline data at the start of every investigation.

Digital Sound Level Meter

Digital Sound Level Meter, DSLM, Useful piece of gear especially with computer.