Leather Softness Tester LLST-A10 Labtron Leather Softness Tester, also known as the digital display portable fabric textile softness tester, offers a 530 ± 10 g load with a 0.1 to 10 mm scale diameter. Its design allows non-destructive testing without sample cutting. The material is placed between test holes, applying a specific load to measure softness by reading the curvature on the scale pointer.