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A collection of featured documents from our library that are popular among our users or otherwise noteworthy.
Shock-resistant wrist watches -- Impact performance and test methods
Measuring method for temperature coefficient of refractive index of optical glass -- Part 1: Minimum deviation method
Measuring method for temperature coefficient of refractive index of optical glass -- Part 2: Interferometry
Shutters for still cameras
Photoelectric methods for measuring light exposure in focal planes of cameras
Photographic lenses -- Measurement for the focal length
Photographic lenses -- Methods for the measurement of the effective aperture, F-number and relative aperture
Determination of ISO colour contribution index (ISO/CCI) of camera lenses
Camera accessory shoes and feet
Tripod connections for cameras
Photographic lenses -- F-number marking
Picture sizes for still cameras
Microscopes -- Screw threads for objectives and related nosepieces
Readers and reader-printers for transparent microforms
Microfilming of documents on 16 mm and 35 mm silver-gelatin type microfilm -- Operating procedures
Portable microbe imaging scope
Ophthalmic optics -- Spectacle frames -- Measuring system and terminology
Welded joints for spectacle frames
Tipping bucket rain gauges
Liquid-in-glass thermometers for testing of petroleum products
Plain limit gauges
Optical parallels
Optical polygons for angle standards
Geometrical Product Specifications (GPS) -- Acceptance and reverification tests for coordinate measuring machines (CMM) -- Part 1: Vocabulary