RSH Whirler, 155 mm high x 220 mm diameter
A high quality whirler, manufactured by Rohde. The turntable has concentric grooves, for centring. The turntable rotates on a minimal contact point on a hardened steel ball resulting in a long rotation time. Can be locked by a turn of the wing screw located under the turntable.
The second photo shows the RSH and RSN whirlers together for comparison