Archive of Collections

Details and Image

TypeModel No.MakerCountryConstruction
DateScale LengthArea of Use
Blundell Harling Mark 5
Blundell HarlingEngland
1967 or after60 cm"""Pilot Balloon Slide Rule"""

Notes: "See article J. Oughtred Soc. 5(2), p. 51, 1996: Feazel, The pilot balloon slide rule. My father, a weatherman in the U.S. armed forces in the Pacific Theater during WWII, took measurements of pilot balloons. I do not know whether he used slide rules…"

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