Quarter-wave plate in wooden frame

ABDNP:200623b

Round quarte-wave plate in wooden square wooden frame with handle. Makers name and address on handle. On other side written on by hand "Quartz" and "1/4X". For use with Newton & Co. optical bench

1890-1900

frame: height 11mm, length 102mm, width 57mm
plate: diam. 41mm

wood, glass

3, Fleet Street, London, England

Newton & Co.