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Isolated Objects: Grey Vintage Mechanical Pinwheel Calculator, On White Background Stock Photo, Picture And Royalty Free Image. Image 145079868.
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Ancient pinwheel mechanical calculator.This is a mechanical device used to perform automatically the basic operations of arithmetic, rendered obsolete by the advent of the electronic calculator. Stock Photo | Adobe Stock
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![Calculator [Pinwheel calculator] - Museum of Transport and Technology, New Zealand](https://collection.motat.nz/records/images/xlarge/27688/bcc8dbbb5af1ede50b9d75e91631f3447c7369f8.jpg "Calculator [Pinwheel calculator] - Museum of Transport and Technology, New Zealand")
Calculator [Pinwheel calculator] - Museum of Transport and Technology, New Zealand
