A free standing, battery operated meter allowing measurement of electron beam probe current for quantitative analytical and back-scatter imaging applications. It is capable of detecting currents from below 1 pA to 2 μA, in five switched ranges. The small size of the unit allows it to be located near the SEM itself. A Faraday cup is supplied with each unit to enable accurate measurements of probe current. 

0.1999 pA accuracy ±5 % of full scale
1.999 nA accuracy ±5 % of full scale
19.99 nA accuracy ±2 % of full scale
199.9 nA accuracy ±2 % of full scale
1.999 μA accuracy ±2 % of full scale