Mini-canon – Sundial by Lafontaine / 18 Palais Royal / Paris
A “mini-canon – Sundial by Lafontairne / 18 Palais Royal / Paris” mid-19th century and in originele mahogany box. The instrument was used to announce noon and set personal watches when they not adequately covered. Due to the position of the magnifying glass above the vessel to adapt it can be used at different latitudes. The passage of the sun at the meridian, by the concentration of the light by the magnifying glass, the powder which is arranged in the light gun.
Measurements box 12 x 10 x 12 cm high