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          Horne Thornthwaite & Wood 123 Newgate Street London

          Early achromatic monocular microscope. c.1848

          Horne Thornthwaite & Wood 123 Newgate Street London. Early achromatic monocular microscope. c.1848
          Horne Thornthwaite & Wood 123 Newgate Street London. Early achromatic monocular microscope. c.1848
          Horne Thornthwaite & Wood 123 Newgate Street London. Early achromatic monocular microscope. c.1848
          Horne Thornthwaite & Wood 123 Newgate Street London. Early achromatic monocular microscope. c.1848
           In storage case
          storage case
          signature
          Horne Thornthwaite & Wood 123 Newgate Street London. Early achromatic monocular microscope. c.1848

           

           

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          Horne, Thornthwaite & Wood advertisement, 1845.

          The main focus utilized with this microscope operates on the stage by rack and pinion. The tube remains stationary and has a fine adjustment operated by the milled knob attached to the tube which moves the nosepiece. Another microscope by the same makers with a similar focusing arrangement can be found elsewhere on this website.

          The firm was established around 1840 by the purchase of the instrument business of Edward Palmer, London. Instruments by this firm had the signature Horne, Thornthwaite, & Wood, London from c. 1840-1860 after which, the  instruments were signed Horne & Thornthwaite, London (c. 1860-1880). By 1886 Wood rejoined the firm.

          See this extensive essay on the firm

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