Archive
of
Collections
Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Linear
Blundell Harling Mark 5
Blundell Harling
England
Plastic
1967 or after
60 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."
Image 1
Image 2
Image 3
Image 4
