Original machine for etching glass with geometrical designs, invented by John Northwood, Wordsley, Staffordshire, England, 1865, and made by Stevens and Williams Limited, Stourbridge, West Midlands, England, 1865-1875 Original machine for etching glass with geometrical designs 1865-1875
Special Akuret print meter. 3-section step wedge in wooden frame; in original box with instructions. Special Akuret Print Meter
Special Akuret actinometer, made by Portable Studio Manufacturing Co, c.1900. Printing frame with 21 step wedge, in 3 rows. Used for carbon and platinotype process. Cost 3/6. With instructions and paper sample packet. Special Akuret actinometer 1895-1905
Base, for original machine for etching glass with geometrical designs, invented by John Northwood, Wordsley, Staffordshire, England, 1865, and made by Stevens and Williams Limited, Stourbridge, West Midlands, England, 1865-1875 Base, for original machine for etching glass with geometrical designs 1865-1875