Pickett N600-ES log log pocket slide rule sleeve USA 1960

Here is an interesting slide rule by by Pickett from about 1960. This model nr. N600-ES a pocket model and it is the actual same model-type that Buzz Aldrin took to Moon on the Apollo Mission. Made in the USA by Pickett & Eckel Inc. (based in Illinois and California). It is ca 15 cm or 6 inches wide. It is called the log-log speed rule and has 19 scale on the front and back combined. In the yellow “Eye Saver” version (standard version is white). It made of aluminum and has minimal signs of use and age. It also comes with the original leather (signed) pocket case as well that has a practical clip to wear it on your belt or in your pocket. This was the Astronauts slide rule of choice!