These are all 5cm. These were used for rolling building materials onto so are pretty heavy duty. By up to 40%.
From the Hensen net toward four-dimensional biological oceanography - ScienceDirect
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A Numerical simulation model for snow storage in small coastal basins, Southwestern British Columbia
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Panduro 2011 - 2012, PDF, Candle
From the Hensen net toward four-dimensional biological oceanography - ScienceDirect
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