TECH OPS

OPTICAL BENCHES, ACCESSORIES FOR OPTICAL BENCHES-NAMELY, OPTICAL BENCH CARRIERS, POST HOLDERS, MOUNTING PLATES, POSITIONING CLAMPS, LENS HOLDERS, CAMERA BACKS, MIRRORS, TRANSFER BARS, ROTATION MOUNTS, BELLOWS, LAMP HOUSES AND ARC LAMPS; TWO-DIMENSIONAL RECORDING MICRODENSITOMETERS AND STEPPING ATTACHMENTS, RECORDING MEDIA AND PARTS AND ACCESSORIES-NAMELY, AUTOMATIC PROGRAMMERS, SPECIMEN TABLE DRIVES, RECORDING TABLE ATTACHMENTS, RECORDING PEN ASSEMBLIES, PEN HOLDERS AND ACTUATORS, PULSE COUNTERS, VIGNETTING CONTROLS, OPTICAL WEDGE AND APERTURE ADJUSTORS, FOR THE SAME