| Gage Designation System | ||
| Single grid | structural representation | |
| 0 ° | AA Pattern |  |
| 45 ° | AB Pattern |  |
| Two grids | structural representation | |
| Two axes45 ° | HA Pattern |  |
| Tee axes 90 ° | BB Pattern |  |
| Parallel axes | FB Pattern |  |
| Coaxial | GB Pattern |  |
| Four grids | structural representation | |
| Coaxial | GD Pattern |  |
| Tee axes 90 ° and Four grids 90 ° | EB Pattern |  |
| Parallel axes | FG Pattern |  |
| Circular diaphragm Patterns | KA Pattern |  |
| Compensation Resistors | structural representation | |
| Fixed resistor types | AA Pattern |  |
| Bifilar adjustable types | AD Pattern |  |
| Rubbing adjustable types | AC Pattern |  |