Vintage Pickett Model 100 \"Douglas Sky Rule\" Aviation Slide Rule With Case For Sale

The Vintage Pickett Model 100 \"Douglas Sky Rule\" Aviation Slide Rule is a rare and sought-after collectible for aviation enthusiasts and slide rule collectors. This unique tool was specifically designed for engineers and mathematicians to perform complex calculations related to aviation, making it a valuable piece of history in the field of engineering and science. With its intricate design and functionality, this slide rule serves as a tangible link to the past and is highly prized for its craftsmanship and historical significance.. it comes with the original case but the case is damaged on the bottom it still holds the ruler securely but needs repair.