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Beam compass
Centering and inscription devices
Inscription devices
Pelikan drafting pen
Keuffel and Esser Paragon engineers ruler
Keuffel and Esser Paragon engineers ruler
Potentiometer, white double
Molecular models, student
Pentode, high voltage
Slide rule (C)
Potentiometer, Model 7, deflection
Temperature gauge
Set of glass dewars
Slide rule (B)
Protractor (B)
pH meter, Model G
pH meter, Model M
Weather guide (2 views)
Ammeter, direct current, Model 1
Filmo projector bulb

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