17th - 18th Century Butterfield Sundial + Leather Cover Case

Description

This is a very early sundial by the well known maker Michael Butterfield.  Seems to be in good working condition, measures about 2 3/4 inches across.
Postage is .00 if within the US, more  If you are outside the US; no charge for careful packing.
Here is some information on the maker Michael Butterfield:
Michael Butterfield
1635-1724
Michael Butterfield (1635-1724) was a British clockmaker who settled in Paris about the year 1663. He worked for the royal court of France and was appointed engineer to the King. He opened in the district faubourg Saint-Germain, in the street rue Neuve-des-Fossés, a shop for precision instruments. His shop's sign read AUX ARMES D'ANGLETERRE (at the sign of England's coat of arms, 1st mention in 1677). Russia's Czar Peter the Great visited his shop in 1717 and ordered a great quantity of dials made of gilt copper. After Butterfield's death in 1724, the sun-watch type he had been manufacturing and selling was copied by many european manufacturers. Description The Butterfield dial is a type of semi-universal horizontal dial, that is, a horizontal dial which can be used in a number of different latitudes, but not in the full range from 0° to 90°. It is generally either octagonal or oval in shape and is almost always marked with three or four different hour scales, each of which is marked with a specific latitude. The essentials of the Butterfield sundial are a dial plate engraved with a number of different hour scales serving different latitudes, a compass, and an adjustable gnomon. The gnomon is marked with a latitude scale and it can move within the bird index which marks the latitude angle against the scale. It was not B. who originally designed these instruments. Examples are known which clearly date from before the time that Butterfield began working in Paris. Earlier items known were made by Roch Blondeau (dated 1673), but also by Timothée Collet. The fact that Butterfield used a bird-shaped pointer on the gnomon probably made his sundials highly fashionable and he soon achieved a monopolistic situation on the market.