Cal Test Electronics introduces its new CT4200 series of passive voltage oscilloscope probes featuring compact 2.5 mm barrel size and bandwidths from 55 MHz to 1.5 GHz. The 8 model series includes 1x, 10x, 20x, and 100x attenuation ratios.

A physicist turned measurement scientist, Harary began at NIST in 1985 as a bench scientist.