HP-65 Programmable Scientific Calculator
Hewlett-Packard Company (HP)
1 1/2 x 3 1/2 x 6 1/4 in.
Serial number is inside battery compartment. There are two squares of Velcro on the bottom. Also inlcuded with artifact is an abrasive card for cleaning the recording head of the calculator.
Electronic calculation; Programmable; Magnetic card; Technical calculation