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Faber-Castell TR1 TR1 Calculator Slide Rule

The Faber-Castell TR1 TR1 Calculator Slide Rule is an arithmetic calculator with 8 digits precision and algebraic logic. It has 9 functions, 21 keys and an LED (light-emitting diode) display, typical of calculators of this era.

Facts at a glance:

Type Arithmetic
Functions 9
Keys 21
Precision 8
Logic Algebraic
Display type LED
Display size
Printer
Length 58 mm
Width 172 mm
Thickness 15 mm
Weight 140 g
Power Source
Country
Original price unknown
Est. current value unknown
Year introduced 1973
Year discontinued 1973

See other calculators manufactured by Faber-Castell.