Philip Harris System Distance attachment

New Philip Harris System Pressure Sensor/Meter H28111 Free UK P&P

Philip Harris SensorMeter - Analytical Measuring Devices - Sound, Humidity, Etc

DataPac Strobe Tachometer Flash Light – Model RP0 Handheld Industrial Stroboscop

New Handheld Stroboscope DT-2350PA 50-12000 FPM Flash Analyzer Xenon Lamp Meter

rare "Whidbourne" Stroboscope and speed counter Baird & Tatlock (London) Ltd.

New Handheld Stroboscope DT-2350PA 50-12000 FPM Flash Analyzer Xenon Lamp Meter