An vintage mechanical calculator featuring a large number pad with keys labeled with numbers ranging from 0 to 9. The device has a hand crank on the side and a series of switches and levers on the top panel. The body is predominantly black with a mint green section where the keys are located. Some red and black buttons are also visible, contributing to its complex appearance.
A beige calculator with multiple buttons, featuring a display that shows the number 3.14. The calculator has a solar panel and various function keys, including numerical digits, mathematical operations, and memory functions.
A vintage mechanical calculator with several numbered dials and levers, displaying a worn and aged metal surface with intricate design details.