Details:
* Authentic altitude ring, true to historical instruments
* High-quality reproduction, combining scientific precision and careful aesthetics
* Designed to reflect the original both historically and functionally
* Delivered in an elegant box, accompanied by a booklet explaining its use and history
* Handcrafted by expert artisans in Madrid, Spain
Specifications:
* Height: 5.12 in
* Diameter: 1.5 in
* Width: 0.83 in
* Thickness: 0.12 in
