1921 Star Finder and Identifier Patent Print, Gilbert Rude Star Finder Chart, Nautical Decor, Marine Celestial Navigation System Patent


Buy 3 items and get 10% off your order
Shipping to United States: $4.95

Capt. Gilbert Rude invented the star finder in 1920. The star finder allows for sight planning so that a round of stars can be efficiently performed during the brief twilight period. The sextant is pre-set to the approximate altitude so that a star will be seen through the sextant optic when held to the horizon in the general azimuth direction. An unidentified star can be observed then identified later during sight reduction using the star finder.

All patent and drawing pages are restored and digitally enhanced to remove as many flaws as possible while maintaining the integrity of the original document.

Patent prints and old drawings are a wonderful way to own a piece of history and display your favorite inventions on your home or office walls.

Select size and color from the drop down menus. Feel free to contact me for a different size or color background or texture. I will do my best to accommodate your request and create a custom order for you.

Computer monitors vary in color calibration, therefore your print may have a slight difference from what your see on your screen.

Shipping from United States

Processing time

1-3 business days

Estimated shipping times

  • Canada : 7 - 14 business days
  • North America : 4 - 10 business days
  • Europe : 3 - 4 weeks
  • Australia, New Zealand and Oceania : 3 - 6 weeks

I'll do my best to meet these shipping estimates, but can't guarantee them. Actual delivery time will depend on the shipping method you choose.

Customs and import taxes

Buyers are responsible for any customs and import taxes that may apply. I'm not responsible for delays due to customs.

Payment Options

Secure options
  • Accepts Etsy gift cards

Returns & Exchanges

I gladly accept cancellations

Request a cancellation within: 3 hours of purchase

I don't accept returns or exchanges

But please contact me if you have any problems with your order.

Reviews (1)


This was a custom order for my family. Very special. Quality research and job printing. Well packed Fast ship. Very pleased to have found Blue Moon. Great transaction! Have a blessed week! :-)

Legal imprint