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Telescope lens made by Ronald Nicholas Irving

Telescope mirror made by Ronald Nicholas Irving

Tripod for telescope made by Ronald Nicholas Irving

Telescope tube made by Ronald Nicholas Irving

Box of lenses for telescopes made by Ronald Nicholas Irving

Tokens used for branding equipment 'H.N.Irving'.

Tokens used for branding equipment 'H.N.Irving'

3 wooden moulds used by suppliers to cast parts. Made by Ronald Nicholas Irving of H.N. Irving and Son.

Three moulds for suppliers to cast parts