Laboratory apparatus and instruments, namely, centrifuges, crucibles, cupels, constant temperature incubators, constant humidity incubators; data loggers; analyzers, namely, voltage analyzers, vibration analyzers, wave pulse analyzers, sound wave analyzers, FFT analyzers and logical circuit analyzers; instruments for measuring and storing data of voltage, temperature, humidity, pulse, strain, frequency and logic data, namely, wave form recorders; thermal array recorders for measuring voltage, temperature, humidity, pulse, strain, frequency and data logic; thermal array recorders; linear recorders; servo recorders for measuring voltage; X-Y recorders; vibration sensors for measuring the vibrational state of the object for use in checking accuracy of laser beam of optical disc drives, checking impalpable vibration of hard disc platters and sliders, checking accuracy of scanning sensor of image scanners and accuracy of wiring apparatus for semiconductors, and checking accuracy of engines and machines; demodulators; displacement meters; laser doppler vibrometers; surface scanners; other measuring or testing machines and instruments, namely, accelerometers, vibration meters, speed indicators, interferometers, distance measuring machines or apparatus range finders; electric or magnetic meters and testers, namely, oscillographs, oscilloscopes, magnetic and frequency meters; data processors; image scanners; scanners; digitizers; computer cursor control devices, namely digitizer tablets; ink-jet plotters; plotters; thermal plotters; cutting plotters; printers; label printers; computer software for scanning images, for use in management of image data, for computer cursor control devices driver, for plotter driver and for scanner driver; three dimensional scanners; three dimensional printers and modeling machines for doing three dimensional designing by use of computers; digital color copiers and digital monochrom copiers; combination plotter and cutter and combination printer and cutter; combination plotter and scanner and combination printer and scanner; printheads for inkjet plotters; electronic control systems for machines