Product Description
This Ealing lens mount is a component in their Research Optical Bench product line. These components have standard threaded cells of either 5 inches or 9 inches diameter. This particular unit has a 5 inch thread. It is meant for vertical positioning of various elements that thread into the ring (numerous adapters were made for smaller diameter threads).
The dimensions of the frame include:
Height = 203mm
Depth of foot = 108mm
Width of foot = 163mm
Width of frame = 178mm
Height of optic axis = 122.8mm
Thread diameter = 5 inches
Thread pitch = 12 TPI
The bracket is in superb condition. The Ealing part number is 22-2059.
Location MB 113
Photo set 850