Soroban (Abacus) | for long tabular computation. + - * / |
||||||||
---|---|---|---|---|---|---|---|---|---|
Slide Rule | for complex equation computation. accurate for 3 decimal places * / log exp trig(sin cos tan) roots |
||||||||
Sextant | for accurate navigation. based on precision time keeping and accurate angular measurement. |
||||||||
Chronometer (s) | for accurate time keeping. (3) three mechanical with manual wind (1) one or more solid state |
||||||||
Hard Copy |
|
||||||||
Communications |
|