Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Linear
humidity ser. 2
Blundell HarlingUnited Kingdom
Plastic
1965-1970s25 cm"Humidity Slide Rule"

Notes: "Series 2 is for Celsius calculations. Blundell Harling manufactured several different versions of humidity slide rules, used to calculate humidity from psychrometer readings."


Image 1




Image 2