Explore the obscure yet fascinating gadgets invented by forgotten pioneers through this crossword puzzle.
Echoes of Obscure Inventive Marvels
A crossword highlighting lesser-known gadgets and their inventive creators from history.
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Across
- 1. Gadget for writing or drawing with heated metal
- 2. Mechanical device for performing arithmetic invented before the digital era
- 3. Device for viewing images in 3D by combining two photographs
- 6. Early electrical gadget used to measure resistance or cut currents
- 8. Instrument to measure wind speed developed by lesser-known scientists
Down
- 4. Early device sending handwritten messages over a telegraph line
- 5. Rotating component used in phonographs and other early machines
- 7. Inventor Thomas A. Edison’s early sound recording machine
- 9. Optical instrument for viewing distant objects, refined by forgotten inventors
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