| Answer | Crossword Clue |
|---|---|
| isodynamics | ISODYNAMIC, a line on a map connecting points of equal magnetic intensity |
| isodynamic | a line on a map connecting points of equal magnetic intensity |
| isomagnetic | a line on a map connecting points of equal magnetic induction |
| isomagnetics | ISOMAGNETIC, a line on a map connecting points of equal magnetic induction |
| isogone | imaginary line, or one drawn on a map, connecting all points of equal magnetic declination |
| isogonic | imaginary line, or one drawn on a map, connecting all points of equal magnetic declination |
| isogones | imaginary line, or one drawn on a map, connecting all points of equal magnetic declination |
| isogonal | imaginary line, or one drawn on a map, connecting all points of equal magnetic declination |
