Mechanical and electrical scales and related accessories sold in connection therewith, namely electrical adaptors, connectors, cables, interfaces, switches, relays, and transmitters; specific gravity kits consisting primarily of hardware for use with a balance to allow weighing below the balance, or weighing an object in water; keyboards; scanners; digital weight indicators and remote displays, namely light indicators, light emitting diodes, liquid crystal, explosion proof indicators and displays, wireless and cable displays; power systems, namely, battery pack, and electrical power supplies; calibration kits consisting primarily of test weights for use in balance calibration; laboratory testing equipment, namely, sample pans, planers, scoops, bowls and weigh boats; test tubes, pipettes and roller conveyors which allow in-motion weighing on a scale; barrier kits consisting primarily of intrinsic safety barriers, namely communication and signal barriers for use in limiting current or voltage in hazardous environments for use with digital weight indicators; software, namely automation software, data collection software, and calibration software for scales; digital to analog converters; computer cables and adaptors; antimagnetic shields; electrical controllers, namely checkweighing controllers, filler controllers, batch controllers, bulk weighing controllers and truck scale controllers; traffic lights; cable and wireless modems; antennas; vehicle loop detectors comprised of sensing devices which indicate the passage of vehicles approaching or passing over a scale; radio frequency identification card readers; sorters, classifiers and counters used in conjunction with digital weight indicators and conveyors to sort, classify and count products by weight; intercom systems comprised of microphones, amplifiers and speakers, serial protocol converters; visible, light and audible process control alarms to prevent batch overflow, USB port to serial port converters; transient voltage surge protectors and electrical fuses for voltage surge protection; Ethernet servers; bridge sensors; hostile environment enclosure units for protection of digital weight indicators; sensors; load cells, namely s-beam, single ended beam and double ended beam load cells, canister load cells, and single point load cells; junction boxes, namely excitation trim, signal trim and cell; weights, namely precision laboratory, electronic balance calibration and slotted interlocking; compression discs and compression, tension and universal canisters; AC and DC transit protectors; power inverters; voltage regulators; printers and printer enclosures; printer label rewinders; bar code verifiers; weigh modules for housing and mounting load cells