Complete with original brass case, this well engineered and well made item has stood the passing of time extremely well, and now makes a good collectors item, or unusual gift for anyone involved in the world of fabrics. PILLAR TYPE LINEN PROVER.' These instruments, seen in catalogs no later than 1840, and likely sold long before that, were referred to as 'Cloth Microscopes for ascertaining the number of threads in a given space of linen cloth.' The most elementary types had no facility for focusing, but others with screw focus were also available. They came in models supported by a single pillar, two pillars or even three FREE UK MAINLAND DELIVERY

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