Fluke's products are really hip (pocket-sized, that is). Fluke, a subsidiary of Danaher (maker of Craftsman tools), makes handheld electronic test tools used by electricians, HVAC technicians, and engineers to install, maintain, and service electrical and electronic equipment. Its multimeters, oscilloscopes, and other devices measure current, voltage resistance, frequency, pressure, temperature, and air quality. It also makes calibrators and calibration software, waveform generators, and power harmonics meters. Its Fluke Biomedical unit makes patient simulators, diagnostic imaging, and radiation safety products, among others. Fluke has production facilities in the US, the UK, Asia, and the Netherlands.