| Function | Instrument |
|---|
| instrument for examining interior of the stomach | |
| instument for visualizing interior of a hollow organ | |
| instrument for measuring variations in gravitational fields | |
| instrument for observing sun without injury to the eyes | |
| instrument for viewing under water | |
| instrument for measuring rainfall | |
| instrument recording a variety of meteorological observations | |
| instrument for measuring electrical resistance | |
| instrument measuring change in size of internal organs | |
| instrument for examining the ear | |
| instrument for measuring heights of places | |
| instrument for measuring the flow of current of electrons | |
| instrument for measuring the intensity of sounds | |
The Nine Planets 
Digits of Pi 
Multiplication Table
