A low-cost combination tilt-lock-latch mechanism for a sliding window that combines ease of installation and adjustment with simplicity of use. In this process the etched precision surface is contacted with a composition which includes liquid or supercritical carbon dioxide and a fluoride-generating species. A signal from the pass device acts as an input signal of the error amplifier and is compared with another input signal, producing a differential signal. Each of the side plates has an opening therein as large as or larger than the throughhole.