Linen Tester by Moller-Therm (Germany)
This fantastic 6x Linen tester Loupe has a base dimensions of approx 3cm square with measurements in mm & inches marked on the base. This stands approx 4cm high when unfolded and has a 6x magnifyer with a diameter of 20mm. The Linen tester folds down to a compact 45mm x 30mm x 10mm size
This Linen Tester is ideal for hobbyists, stamp collectors, jewelers, map reading, watch repair, etc.
A linen tester is a strong magnifier with a measuring scale and a built-in stand.
The linen tester was invented to check the quality of woven fabrics. It is used in the textile industry to measure the number of weft and warp threads within a certain area of fabric. Today, it is more commonly used to measure the line width and check the registration of color separations in the field of printing and publishing.
It consists of a strong magnifier and a glass disc which has a measuring scale engraved in it. Nowadays, the scale is usually divided into millimetres; older linen testers had an inch scale. Simpler models have a square opening in the foot, with a scale applied to one or more edges of the opening.
Linen testers are also used in other branches of industry. For example, they can be used to measure the line weight of barcodes.