signed Nicola Ruspinus Fesit Amsterdam, period 1735-1750. Extremely rare early Dutch copy. Both the pewter scale plates and the walnut cabinet have decors of leaf tendrils. Indication in Amsterdam thumbs on separate summer and winter indication. Noteworthy is a brass scale plate with pointer, which serves as a trend indicator, and is mounted on the removable cap. A masterpiece of museum quality, height 123 cm.