This Downproof Tester is used for down and/ or feather penetration through the primary tick fabric of a specimen containing feather and/or down filling.
Seam Fatigue Tester is the measurement of failures in the three most commonly used upholstery seams - warp sewn to warp (wale to wale), filling sewn to filling (course to course), and warp sewn to filling (wale to course).
English 
