Spatial positioning system
Specimen-holder system for upright microscopes
Speckle resistant method and apparatus with chirped laser beam
Spectrofluorimeter
Spectrometer of the electro-opto-acoustic type with capacitor-ty
Spectrometric system and cassette
Spectrophotometer
Spectrophotometer
Spectrophotometer
Spectrophotometer
Spectrophotometer with parallel sensing
Spectrophotometer with visual spectrum display
Spectroscopic analysis apparatus employing measurement and refer
Spectroscopically selective filter device
Speed and position measurement system
Stabilized optical system with off-axis stabilizer
Stabilized pointing mirror
Stabilized range finder for use with an electronically controlle
Stabilized sighting apparatus
Stage assembly for thermodynamic study under a microscope