Vintage Hewlett-Packard HP 97 Programmable Calculator Surveying Pac 1 Standard | eBay
HP 97 Calculator Restore - YouTube
File:Vintage Hewlett-Packard Model HP-97 Magnetic Card-Programmable Handheld Calculator With Thermal Printer, 7-Segment Red LED Display, Cost New = 750 USD, Circa 1976 (14548847987).jpg - Wikimedia Commons
This calculator was introduced alongside the pocket HP 67 as a step... News Photo - Getty Images