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Microscope Museum Collection of antique microscopes and other
scientific instruments |
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Microscopes 310A, 310B and 310C (unassigned
makers; folding linen testers; mid to late 20th century) Microscope 310A
Microscope 310B
Microscope 310C
Microscopes
310A, 310B and 310C are folding linen testers, or linen
provers, and should be dated to the mid or late 20th century.
These instruments would be used for counting threads in fabrics (the number
of threads per unit of length provides evidence of a higher quality of
cloth). The makers of these instruments are unknown. However, microscope 310B
looks identical to a X7 linen prover featured in a 1970s catalogue of
LOMO/Zenith (Figure 1).
Figure 1. Folding
X7 linen prover featured in a LOMO/Zenith’s catalogue from the 1970s. |
