Minnesota Mining and Manufacturing Company

Steven M Stensvad

Bruce A Rabine

The novel device prepares samples of loose particles such as roofing granules to present a level surface from which colorimeter measurements can be made. The particles to be measured overfill a dish, the lip of which has a bevel providing a knife edge at its inner diameter. A roller is rolled back and forth across the dish to push excess particles beyond the knife edge from which they fall through a grid on which the dish rests.

Growing community of inventors

White Bear Lake Township, MN, United States of America

Steven M Stensvad