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  • Terms: calculating instrument
/ 29
slide rule

slide rule

Pickett & Eckel, Inc.
circa 1959
Amsler integrator

Amsler integrator

Jakob Amsler
circa 1906
slide rule

slide rule

Keuffel & Esser Company
1936-1943
compensating polar planimeter

compensating polar planimeter

Gebrüder Haff
circa 1949
Faber slide rule

Faber slide rule

A. W. Faber
late 19th-early 20th Century
metric to English conversion slide chart

metric to English conversion slide chart

Nelson Taxel
copyright 1971
Dyna-Slide two-slide blank slide rule

Dyna-Slide two-slide blank slide rule

Dyna-Slide Company
circa 1962
rail for Amsler integrator no. 4

rail for Amsler integrator no. 4

Jakob Amsler
circa 1906
Dyna-Slide three-slide blank slide rule

Dyna-Slide three-slide blank slide rule

Dyna-Slide Company
circa 1962
polar planimeter

polar planimeter

Gebrüder Haff
circa 1949
transmission decibel and standard slide rule

transmission decibel and standard slide rule

Raytheon Manufacturing Company
Copyright 1966
Midget slide rule

Midget slide rule

Tavella Sales Company
copyright 1934
/ 29

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