FED-STD-311/1021.1 - Thickness, Specimen
FED-STD-191/5030 - Thickness of Textile Materials; Determination of
ISO 9073-2: Textiles -- Test methods for nonwovens -- Part 2: Determination of thickness
ASTM D1777 - Standard Test Method for Thickness of Textile Materials
ASTM D 5199 - Standard Test Method for Measuring the Nominal Thickness of Geosynthetics
DIN 53855