Floating Ring Consolidometer 2.5 in (63.5mm) diameter, features stainless steel base with attached clear acrylic inundation ring. Comes with stainless steel load pad, load bearing ball, 2 porous stones and 1 in (25.4mm) high self-trimming sample ring. 0.75 in, 19mm available. Fixed Ring Consolidometer 2.5 in (63.5mm) diameter*, features stainless steel construction, self-trimming sample ring (2.5 in) (63.5mm) diameter by 1.0 in (25.4mm) high, clamping ring and attached acrylic inundation ring. Base has outlet port to monitor water level. Comes with stainless steel loading pad, load bearing ball, 2 porous stones and 10 cc pipet that attaches to outlet port. * Other sizes available from 2.0 in to 4.0 in (50.8 to 101.6mm) diameter - inquire. Back Pressure Consolidometer Design allows for pressure and permeability measurements during consolidation test. Comes with stainless steel top cap with piston passing through linear bearings and connecting to top pad. Take-off ports allow confining pressures to 200 psi. Bottom ports provide for pressure and flow rate monitoring. Calibration Disc for 2.5 in (63.5mm) diameter consolidometers, dimensions are 2.460 in (62.5mm) diameter x 1 in (25.4mm) high per ASTM D-2435. Determines load frame deformation at various loads. Inquire about other sizes. Cutting Ring Stainless steel, 2.5 in (63.5mm) ID x 1.0 in(25.4mm) high for 2.5 in (63.5mm) consolidometers. Inquire about other sizes.