Abstract: An ultrasonic probe assembly includes an ultrasonic probe having a housing, an ultrasonic sensor, at least one magnet, and rotatable joint portions. The housing extends along a longitudinal axis between first and second ends and includes a base surface. The sensor is secured adjacent a housing base surface configured to emit ultrasonic signals and receive ultrasonic echoes reflected from a target. The magnet is secured within the housing and configured to apply a magnetic force urging the base surface into contact with a surface of the target. The magnetic force frictionally maintains the housing at a stationary position with respect to the target surface. A first rotatable joint portion is positioned on a first lateral side of the housing. A second rotatable joint portion is positioned on a second lateral side of the housing, opposite the first lateral side.