들밀드 시험기 For determining in-place density of gravel and coarse soils. Features two identical cones (top cone is clear plastic) with large valve in middle and circular density plate. (Relation standard: : KS F 2311)

MODEL	STM-SO-531
Plastic Sand Jar	4 liters, 8 liters, 12 liters
Cone Size	Diameter 6½ inch
Valve Hole	Diameter ½ inch
Plate Size	12×12 inch
Material	Aluminum