Davis Quick Reference Celestial Navigation Card [132]

The Davis Celestial Navigation Card offers a simplified yet comprehensive system. It has all you need, like how to use and correct a sextant, a star finder for 18 stars, a data entry form, and easy - to - follow sight reduction and plotting steps. You can score and separate it. A large part fits neatly in the sextant case for quick look - ups, and the small part serves as a waterproof data reduction card.

Using this Davis Celestial Navigation Card is easy. First, if you're using a sextant, refer to the part of the card that shows how to use and correct it. When you want to find stars, use the star finder for 18 stars. Fill out the data on the data entry form as you make your observations. Then, follow the step - by - step sight reduction and plotting procedures. Remember, you can score and separate the card. Keep the large part in your sextant case for quick reference during your navigation. The small waterproof part is great for keeping your data safe. To maintain the card, keep it dry as much as possible, especially the waterproof part. Don't bend it too roughly to avoid damage to the printed information.