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560 items

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IBM Punch Card Fortran Code

Used by Charlie Duke for non-linear least-squares curve fitting during the 1960's. Fortran Program used at ISU computer.
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Globe

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Thermometer

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Dewpoint

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Dumont Oscillograph

Type 304A
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Oscillograph

Type PM12a6
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Variable Resistor

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Galvanometer Ayrton Shunt

Universal Ayrton Leeds & Northrup shunt for any galvanometer. . Decreases galvanometer sensitivity by shunting a selected fraction of the input current to bypass the galvanometer. Shunt resistance affects galvanometer damping. Date Unknown. Model No. 2116, Serial No. 275073