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Bausch & Lomb US Navy binoculars
Polaroid Photo-Elastic Specimens No. 449
Microscope
Integrator
Planimeter
Planimeter
Deformer apparatus
Brass plumb bob
Field protractor
Altimeter
Dietzgen odometer
Directional compass
Surveying aneroid
Slide rule
Military slide rule
Slide rule
Logarithmic slide rule
Winslow strength-computing slide rule
Cylindrical calculator
Rolling parallel ruler

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