Gurley Automatic Densometer & Smoothness Tester

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Model: 
4340

The Model 4340 Automatic Densometer & Smoothness Tester measures the porosity, air-permeability or air resistance of sheet-like materials.  It combines the abilities of a low, standard and high pressure tester with a digital timer that provides a reading in seconds.An auto-drive mechanism, enables you to program the number of tests as well as the span they are tested over.  Therefore, a sheet or strip of paper can be analyzed automatically.