Trade card for John Yarwell, St Paul's Church Yard, London, 1683.
© Science Museum / Science & Society Picture Library
Trade card of English optical instrument maker, John Yarwell of St Paul's Churchyard, London dated 1683. The card is illustrated with a wide selection of drawtube telescopes, one of which is shown being used by a seated gentleman. Next to this telescope is a triangular glass prism displayed lengthways along with two compound microscopes on the table. The remaining instruments on Yarwell's card are eye glasses in the form of hand lenses and a pair of pince-nez armless spectacles that are worn on the nose.