Hanging Altitude Ring dial (40º or 50º Lat.)

H87

10 Items

Altitude sundial. Takes this name because the parameter of its construction is based on Sun’s altitude. This brass made model is available for two different latitudes: 40º or 50º.

On15th century mariners found a way to estimate their latitude to find their location in the sea. It was based on a well-known fact: the height of celestial bodies depends on the latitude. Soon various instruments joined the quadrant, the nautical astrolabe and the cross-staff or ballastella. Pedro Nunes (Portugal) invented the nonius, a process for subdividing scales, and created other instruments of innovative design.

Measures:

Diameter: 40mm / Width: 21mm / Tickness: 4mm  

Height: 5.1" / Diameter: 1.77" / Thickness: 0.2"

45,10 € tax incl.