Keith Midson:
HP28S clear case
Keith Midson:
Hewlett Packard clear cased 71B
Keith Midson:
Hewlett Packard clear cased 71B
Keith Midson:
Hewlett Packard clear cases
Keith Midson:
Hewlett Packard clear cased 28S calculator
Keith Midson:
Hewlett Packard 19B clear case
Keith Midson:
Hewlett Packard 19Bii clear case
Keith Midson:
Rare blue Hewlett Packard 12C
Keith Midson:
Hewlett Packard Xpander prototype
Keith Midson:
Hewlett Packard Xpander prototype
Keith Midson:
Hewlett Packard Xpander prototype
Keith Midson:
Hewlett Packard 30B evolution
Keith Midson:
Hewlett Packard clear cased clamshells
Keith Midson:
Hewlett Packard 17B evolution
Keith Midson:
Hewlett Packard 94 Calculator
Keith Midson:
HP 94F & 94E Industrial Calculator
Keith Midson:
Rare or unusual HP 12C's
Keith Midson:
Rare blue Hewlett Packard 12C
Keith Midson:
Yokogawa Hewlett Packard 21
Keith Midson:
HP 28S Keith Edition
Keith Midson:
Early HP 17B prototype
Keith Midson:
HP 18C Frankencalc
Keith Midson:
HP 18C Frankencalc 2
Keith Midson:
HP 18C Frankencalc 3
Keith Midson:
HP 18C - production and custom versions
Keith Midson:
HP clamshell rarities
Keith Midson:
Hewlett Packard 67 - clear case
Keith Midson:
HP41CX with clear case barcode reader
Keith Midson:
Blue HP-50G
Keith Midson:
Hewlett Packard Blues
