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General dataSKYWATCH® Windoo 1 is an anemometer-thermometer for your smartphone. It measures and indicates the following information:Windspeed Temperature - Wind chill factorMeasured data can be stored and shared on facebook, twitter or windoo.chTo know if your smarphone is compatible wi..

General dataSKYWATCH® Windoo 2 is an anemometer-thermometer for your smartphone. It measures and indicates the following information:Windspeed Temperature - Wind chill factor Humidity - Dew pointMeasured data can be stored and shared on facebook, twitter or windoo.chTo know if your smar..

General dataSKYWATCH® Windoo 3 is an anemometer-thermometer for your smartphone. It measures and indicates the following information:Windspeed Temperature - Wind chill factor Humidity - Dew point PressureMeasured data can be stored and shared on facebook, twitter or windoo.chTo know if..

Replacement bulb to suit various makes of compass.Bulb Details:Voltage: 12v Amps: 100mA Form: Flanged Diameter: 6.2mm Length: 16mm maxSupplied in a pack of 2..

Antique-fi nished brass case, parchment-style compass card and protective domed glass top together make the perfect chart table compass and paperweight.Diameter 8cmweight 250g...

Named in tribute to the world famous clipper Cutty Sark, this antique-finish brass compass has an engraving of the globe on the underside centering particularly on Australia, destination for Cutty Sark on many occasions to bring wool and other cargo back to England.In December 1883, Cutty Sark broke..

The armillary sphere shows the Earth (a central ball) surrounded by rings (armilla in Latin) which represent the great circles of the heavens. It was widely used during the 17th and 18th centuries in scientifi c debates over the relative merits of the competing central Earth and central Sun theories..

The armillary sphere shows the Earth (a central ball) surrounded by rings (armilla in Latin) which represent the great circles of the heavens. It was widely used during the 17th and 18th centuries in scientifi c debates over the relative merits of the competing central Earth and central Sun theories..

Quarter-size version of the Captain Campbell vernier sextantmeasures 11x10cm. Box 13cm square..

Inspired by a design from the 18th century instrument maker Peter Dollond, founder of a great optical empire. The original is in the London Science Museum. The gnomon, which casts the shadow, can be set for latitude on a sliding scale; and the whole instrument oriented in the meridian by means of a ..

A different shape to the instrument produced by Peter Dollond but essentially the same. Inspired by originals in the Science Museum. The gnomon, which casts the shadow, can be set for latitude on a sliding scale; and the whole instrument oriented in the meridian by means of a magnetic compass in the..