BS 3625:1963

This standard BS 3625:1963 Specification for eyepiece and screen graticules for the determination of the particle size of powders is classified in these ICS categories:

• 19.120 Particle size analysis. Sieving
• 17.180.30 Optical measuring instruments

This British Standard specifies requirements for the design and construction of eyepiece and screen graticules for particle size analysis by the optical microscope method as described in BS 3406-4¹⁾.

Design and construction of eyepiece and screen graticules for particle size analysis by the optical microscope method as described in BS 3406-4.