Aleksandr Boldyrev sundials
Sundials and cultural artifacts
Prerevolutionary spelling
Specifications.
Sold on. A copy can be made within one month.
Brass, diameter 284 mm, weight 2345 g, patina. The thickness of the dial is 5 mm. The thickness of the gnomon is 9.5 mm.
Price 55 000 rubles.
Related materials.
Description.
Within 150 km from Moscow, the instrument allows you to measure the true solar time of 150 seconds. To recalculate the true solar time into the mean time, the instrument has a detailed graph of the equation of time.