Camcorders; Egg-candlers; Alarm bells, electric; Carpenters' rules; Dog whistles; Electrical plugs and sockets; Electrical transducers; Magnifying peepholes for doors; Marking gauges for joinery purposes; Measuring glassware; Monitoring devices for monitoring battery performance characteristics; Screw-tapping gauges; Self-acting focussing projectors; Slide calipers; Solar panels for the production of electricity; Square rulers for measuring; Surveying instruments; Switches, electric; T-square...