Rock free Swelling Rate tesing Meter 1.Dial gauge: 1mm, 0.001mm 2.Precision: 0.001mm 3..Porous disc: dia50mm Rock Free Swelling Rate Meter Specifications: 1.Dial gauge: 1mm, 0.001mm 2.Precision: 0.001mm 3.Glass tank: 95mm(L) ×95mm(W) ×85mm(H) 4.Porous disc: dia50mm/50×50mm 5.Specimen size: dia50×20mm/50×50mm 6.Dimension: 200×100×195mm Rock Free Swelling Rate Testing Meter