Safe Viewing – Lens Projector

	Using any lens system (hand lenses, binoculars or projector) is the most dangerous method. It must not be attempted unless you are confident and practised in the required safety procedures. There is an instant danger of blindness, setting fire to the screen or overheating and permanently damaging your lens system. Constant supervision of children is essential. You have been warned.
	However, the image produced is sharply focussed, very bright and large ( 20cm).

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