Antique table magnifier, used for reading maps. The instrument is made of brass and was made in England towards the end of the 19th century. The lens rests on three feet. You can focus the lens by turning it up or down. The optics are clear and scratch-free. It is in good condition, with minor signs of wear due to age and use.In a time periode case . Dimensions: Diameter 4.5 cm; Height 5 cm Please see all pictures as they are part of the description.