Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Linear
Blundell Harling / S143 and S150
Blundell Harling
England
Plastic
1960's
25 cm
Engineering

Notes: "Two slide rules by Blundell Harling, an S143 and an S150. The S143 is essentially a Mannheim with no trig scales, and the S150 is a Rietz. Both slide rules are constructed of plastic in the manner of a duplex slide rule (i.e., the slide is fully exposed on the back), but the back is completely blank. The small “ears” at each end of the rules are cursor stops"


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