Profile: Quartzlock (UK) Ltd. specializes in measurement science, and building off-air and atomic frequency referencing standards & calibration equipment. Our products are used for referencing and calibration at the highest level in research & development, production testing, frequency referencing, and time & frequency metrology. We provide RF and microwave components, which are designed to complement our own range of time & frequency standards, as well as being compatible with other manufacturers' systems. They include programmable attenuators, hi-field antennas, and precision housings.