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Model 200A audio oscillator, 1939—six views
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Model 200A audio oscillator - six views.

Click to go to larger photo of the Model 200A audio oscillator - back view. Click to go to larger photo of the Model 200A audio oscillator - bottom view. Click to go to larger photo of the Model 200A audio oscillator - right side view. Click to go to larger photo of the Model 200A audio oscillator - front view. Click to go to larger photo of the Model 200A audio oscillator - left side view. Click to go to larger photo of the Model 200A audio oscillator - top view.