Testers & scales calibrated before despatch

Gem & precious metal testers, since 1986

Collections: Linen testers

Linen testers were originally designed for measuring the threads-per-inch on linen, which is they have a scale marked around the base. Today they are more often used for stamps, coins, prints...anything flat.  They come in all sizes, from tiny (like loupes) to large (as a stand magnifier large enough to work under).
  • With light: very large folding "Linen Tester" magnifier, lens size 2.5X90
    With light: very large folding
    Regular price
    £7.50
    Sale price
    £7.50
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  • Tiny clear plastic 'linen tester' magnifier, 8X15 lens
    Tiny clear plastic 'linen tester' magnifier, 8X15 lens
    Regular price
    £1.50
    Sale price
    £1.50
    Regular price
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    per 
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  • Linen tester, 10x mag + light + scale
    Linen tester, 10x mag + light + scale
    Regular price
    £4.90
    Sale price
    £4.90
    Regular price
    Unit price
    per 
    Sold out