calculator.org

the calculator home page

Mach I (SLIDE RULETTE)

The Mach I is an arithmetic calculator with algebraic logic. It has 6 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA. Note: Unisonic 1212

Facts at a glance:

FeatureValue
TypeArithmetic
Functions6
Keys19
LogicAlgebraic
Display typeVFD
Length133mm
Width83mm
Power Source4xAA
Year introduced1972

Replacements:

If you have a Mach I that is no longer working, you can first try replacing the 4xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.

We suggest the following current models as possible replacements:

See other calculators by Mach