Cardinal Points

The four cardinal points of the horizon, or of the compass, are the North, South, East and West. The inter-cardinals are the North-east, South-east South-west and North-west.

THE SEXTANT OF REFLECTION

1. Mirror.

2. Telescope.

3. Handle.

4. Shade Glasses.

5. Horizon Glass.

6. Adjusting Screws.

7. Back Shade Glasses.

8. Arc.

9. Index Tangent Screw.

10. Sliding Limb.

11. Reading Glass.

12. Vernier Shade.

13. Vernier.

14. Mirror Adjusting Screw.