A mesh network of temperature probes which measures the internal temperatures of compost piles and wirelessly transmits the temperature data to a computer; Actinometers; Air analysis apparatus; Alarms for the detection of inflammable gases; Alcoholmeters; Carbon dioxide detectors; Carbon monoxide detectors; Distance measuring apparatus; Electronic touch sensitive pads for use with infant movement alarms; Fingerprint imagers; Gas testing instruments; Infrared detection apparatus; Laser speed d...