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Microscope cloth counting glass by J. Casartelli & Son of Manchester.

About the Item

Microscope cloth counting glass by J. Casartelli & Son of Manchester. In original maroon leather velvet lined case. Marked: J. CASARTELLI & SON SALFORD.6. Rd 14755. Registered design number: 14755 (1890). Scales divided in to: 1 - 2 inches, 1 - 20 mm, and 5/M, 6/M, 10/M & 37/200. Case dimensions: 12.5 cm x 8 cm. x 5.5 cm. For a similar microscope cloth counting glass by Casartelli see the collection of the Science Museum, London. Object number: 2016-2006. Textile merchants would have kept pocket-sized instruments like this one close at hand to check the quality of the cloth they were trading. Using the built in scale to measure the construction of the cloth, the number of threads per inch could be counted. There is a scale etched either side of the instrument and the small pin kept the cloth in place while it was being examined. Wool, cotton or other fibres are spun into thread then woven together to create cloth. The quality of the cloth is determined by the thickness and texture of the thread and the tension and density of the weave. Thread count is often used as a measure of fabric quality.
  • Dimensions:
    Height: 2 in (5.08 cm)Width: 5 in (12.7 cm)Depth: 3 in (7.62 cm)
  • Materials and Techniques:
  • Place of Origin:
  • Period:
  • Date of Manufacture:
    Circa 1900
  • Condition:
    Wear consistent with age and use.
  • Seller Location:
    London, GB
  • Reference Number:
    1stDibs: LU1190235998042
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