Calibration devices for calibrating optical emission spectrometers, atomic absorption spectrometers and X-ray apparatus, other than for medical use; Collimators; Fiber optic instruments, namely, waveplates, laser optics and IR materials in the nature of conductive fibers, namely, high power fibers for conducting laser beams in the mid infrared wavelength range; Hermetically sealed sapphire optical window systems and electrical terminals and feedthroughs for high voltage and other harsh environments; Laboratory instruments, namely, radiation devices in the nature of ultraviolet, visible, or infra-red light boxes for the analysis of bodily fluids; Laser device for projecting a visible line on a work piece to be cut by a rotary power saw; Laser diodes; Laser equipment designed for cutting drilling, marking, engraving and shaping optical lenses for eyeglasses; Laser measuring systems; Laser pointers; Laser rangefinders; Laser scanners for industrial inspection; Laser-beam-emitting device which projects right angles for construction purposes; Lasers for measuring purposes; Optical filters; Optical lenses; Prisms; Prisms; Prisms for scientific purposes; Scientific apparatus, namely, spectrometers and parts and fittings therefor; Signal splitters for electronic apparatus