Viking clear plastic linen tester
Made from clear plastic with the Viking logo printed.
Peak Black Japanned double lens linen tester 25x25mm
Black Japanned mount with square aperture. Double lens system reduces any distortion at the edge of the field.
Double Lens Linen Tester – 1″x1″
When open, the cut out square on the base is marked along all four sides in Imperial or Metric scales. (It is still a surprise, or is it, that we sell ten times as many Imperial models than Metric)! This enables the number of threads and weave to be counted to the inch (or centimetre) and therefore to determine the quality and strength of the material.