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Description is exactly The lamp is made from brass and blackened metal. The instrument stands on a circular base which is signed "Watson & Sons, 313 High Holborn, London. W.C." Connected to the base is a square column, on which the lamp is attached by an arm. The lamp can be adjusted vertically by the column and thumbscrew by loosening the thumbscrew and adjusting the height. The glass reservoir holds the oil and there is a small, circular glass plug which can be removed to add fuel. Above the reservoir is the burner. The instrument also consists of wick adjustment wheel which is stamped "E. Miller & Co." The chimney has a removable blue glass window for emitting the light when using it with a microscope.
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