Harvard Miniature Compaction Apparatus

Used for moisture density tests using small samples, its compaction action duplicates the kneading action of a sheeps-foot roller. Mold is 1.2625" (33mm) ID by 2.816" (71mm) H. Unit is designed so collar remover and specimen ejector are consolidated into one piece. Set includes specimen ejector, collar remover with spacer plate, mold holder, 1/454 ft³ (129m³) volume mold and collar, compaction tamper with 20 lb. (9.07kg), 37.5 lb. (17kg), and 40 lb. (18.2kg) spring and operating instructions. Mold is machined from seamless tubing. Unit weight in pounds per ft³ m³ and the net weight of a compacted specimen in grams are figuratively equal.

H-4165 includes these individual components
Mold assembly: H-4165.15
Tamper assembly: H-4165.16
Spring, 20 lb.: H-4165.20
Spring, 37.5 lb.: H-4165.375
Spring, 40 lb.: H-4165.40