ISO 5636
aper and board -- Determination of air permeance (medium range)
TMI 58-03 Densometer (Gurley)
Model 58-03 measures air permeability (Gurley type) of sheet like materials including Paper, Paperboard and nonwovens.
TMI 58-24 Monitor Smoothness II Sheffield
Designed to work with existing smoothness and porosity heads. It provides an inexpensive means to improve measurement accuracy, and to remove old style mercury-based measuring systems.
TMI 58-27 Bendtsen Roughness Tester
The Bendtsen Roughness Tester is a microprocessor-controlled instrument for measuring the roughness and air permeance of paper and board using the Bendtsen method.