HP-65 Programmable Scientific Calculator
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.
Hewlett-Packard Company (HP)
1 1/2 x 3 1/2 x 6 1/4 in.
Electronic calculation; Programmable; Magnetic card; Technical calculation