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Compass & Sundials


History of Magnifying Glasses

The earliest evidence of a magnifying device was a joke in Aristophanes's The Clouds from 424 BC, where magnifying lenses to start kindling were sold in a pharmacy, and Pliny the Elder's "lens", a glass globe filled with water, used to cauterize wounds. (Seneca wrote that it could be used to read letters "no matter how small or dim"). Roger Bacon described the properties of a magnifying glass in 13th-century England. Eyeglasses were developed in 13th-century Italy.The magnification of a magnifying glass depends upon where it is placed between the user's eye and the object being viewed, and the total distance between them. The magnifying power is equivalent to angular magnification (this should not be confused with optical power, which... Read More


Good Friday, Easter and ANZAC Day Public Holiday Closure

We will remain closed over the Good Friday, Easter long weekend and ANZAC Day public holidays and will be back on Friday 26 April 2019. Read More