This vintage Casio fx-1000F/ fx-5000F scientific formula 128 calculator manual is a must-have for any collector or enthusiast. It features a range of functions to aid in complex calculations, and was produced in Japan. The calculator is in great working order and includes a manual to help with its use.

The item is perfect for anyone interested in vintage electronics or calculators, and the Casio brand is well-known for producing high-quality products. This calculator is a great addition to any collection and can still be used today.