Product Categories Gaussmeters Electrostatic Voltmeters Air Ion Counters Voltage Measurement Accessories All Products Gaussmeter Model GM2 Laboratory gaussmeter that reads AC/DC magnetic fields, true peak field, has an alarm and USB datalogging. Maximum range is ±30,000 gauss. Learn More Air Ion Counter AIC2 The Air Ion Counter Model AIC2 is a Gerdien condenser meter that measures the number of positive and negative ions in air, with USB datalogging. Learn More Oscilloscope Preamplifier LNA10 The LNA 10 oscilloscope preamplifier will significantly improve the small-signal performance of oscilloscopes at frequencies below 1MHz. Learn More