Microscope Museum

Collection of antique microscopes and other scientific instruments

Micrometer glass slide for microscope calibration by W Watson & Sons

Item 102 is a micrometer glass slide for microscope calibration by W Watson & Sons. The slide is protected in a small box with the inscription “W WATSON & SONS LTD, OPTICIANS, 313 HIGH HOLBORN, LONDON”. The glass slide itself has no other marks beyond the micrometer scale. W. Watson & Sons were opticians and camera makers trading from London and Edinburgh. The company was originally founded in 1837 by William Watson at 71 City Road, and the business continued at this address until 1861, when it moved to 313 High Holborn. In 1867, the name was changed to W. Watson & Son. In 1882, the name was changed to W. Watson & Sons. In 1900 the company acquired the John Browning and Co., and in 1908 the firm became W. Watson & Sons Ltd. In 1929 they published an advert in the British Industries Fair Catalogue as an Optical, Scientific and Photographic Exhibit, highlighting the manufacture of microscopes for medical, industrial, and educational purposes. Into the 1950s, the company changed their address to 25 West End Lane, Barnet, Hertfordshire, where they stayed until the late 1960s. In 1957 the company was acquired by Pye of Cambridge and, ten years later, was taken over by Philips. By 1970 the manufacture of microscopes was over.

Note: this item was kindly donated by Dave Levell (Pembrokeshire, Wales) in May 2023.