These Foldable Steel Linen Testers are used to magnify stamps, coins, currency, as well as, simulataneously measure their features due to their built-in scales.  Each supplied with a protecting case.

No. 9535, 6X, Height 2", Lens Size: 1-1/8" diameter, Cut Out: 1-1/4 x 1-1/4", 20 mm scale in 1mm increments and 1" scale in 1/8" increments, supplied with case

No. 9536, 10X, Height 1-1/4", Lens Size: 1/2" diameter, Cut Out 1/2 x 1/2", 10 mm scale in 1mm increments and 1/2" scale in 1/8" increments, supplied with case

No. 9864-A (E1255), 10X, Height 27 mm, Lens Size 14.6 mm, Cut Out 15 x 15 mm

No. 9864-C (E1258), 6X, Height 42 mm, Lens Size 22.6 mm, Cut Out 25 x 25 mm

No. 9827, 5x Magnifier with 1" biconvex lens and 20mm scale in 1/2mm increments.

Plastic Linen Testers with Lateral mm Scale:
No. 9864-D (E1270), 5X, Height 56 mm, Lens Size 23.6 mm, Cut Out 30 x 30 mm