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Zeichenapparat (drawing apparatus)
Potentiometer, white double
Compass with pocket string sundial
Telescope and scale
Quadrant in wood case, brass
Wing-section model for GALCIT 10 ft. wind tunnel
Altimeter in leather case
Potentiometer, standard resistance
Thacher's calculating instrument (2 views)
Compass used in cosmic ray research
Ion chamber in green box
Logarithmic slide rule
Wrico lettering set
Ainsworth Transit
Rolling parallel ruler
Lietz drop compass
Delta Wing test model
Ion chamber used by Millikan
Berger Transit
Temperature gauge

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