A cradle for holding an ultrasound probe includes a base for securing to a stepper-stabilizer, roller-bearings supported on the base, and a probe-holder that rotates on the roller-bearings about a horizontal axis relative to the base. The probe-holder includes a front yoke and a rear yoke, with a yoke retainer supporting the front yoke. A pivot side rail and a lock side rail span rigidly between the front yoke and the rear yoke. A locking knob is captured to the lock side rail to prevent the locking knob from detaching. A latch hinged to the pivot side rail is engaged by the locking knob for securement over the probe. A detent ensures 90-degree alignment of the yoke retainer to the base. The rollers rotatably support the yoke retainer and the rear yoke, and further rotation of the front yoke enables a further adjustment to calibrate the cradle.