By measuring the change in velocity of an acoustic signal, the Ultrasonic Cement Analyzer provides a continuous, non-destructive method of determining compressive strength of a well cement as a function of time while at temperature and pressure. The Static Gel Strength Measurement (SGSM) device uses a vaned bob to condition a cement slurry inside a pressurized test cell and intermittently measure static gel strength at down-hole conditions. By directly measuring the forces required to initiate movement in the sample, the SGSM provides an accurate way of determining the static gel strength.