Archive of Collections

Details and Image

TypeModel No.MakerCountryConstruction
DateScale LengthArea of Use
Gilson Refraction Rule
Gilson for Woods HoleUSA
1943Dia = 10.8 cmMarine Accoustics

Notes: "1) Used to determine sound velocities in water, detection range using sound waves, bending of sound ""rays"". 2) Developed by Woods Hole for the U.S. Navy for WWII submarine applications. 3) An example of a ""custom"" slide rule made by Gilson."

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