Device for detecting the presence of a chemical contaminant

Device for detecting, assessing and signaling thaw of frozen...

Device for detection of imminent gas depletion of a liquified ga

Device for indicating a restaurant patron's status

Device for indicating a symbol representing the location of a pa

Device for indicating brake wear

Device for indicating the current score when participating in sp

Device for indicating the maximum reading of a measuring instrum

Device for indicating the operative position of a valve

Device for locating in buildings the exact position of hidden ob

Device for locating lost skis in powder snow

Device for marking cars

Device for marking the path along the ground of a rolling wheel

Device for optically indicating the pressure of a medium

Device for recording and displaying a tennis score

Device for recording changes in indicia

Device for securing elements to a tapered shaft

Device for sugar and/or caffeine content indication

Device for use as a bookmark or for promotional purposes

Device for visually setting the spring force of a seat suspensio