Stansbury denture tripod and djustable articulator
A very complex machine of two separate parts. The upper part has four 'ball' feet which sit on three adjustable channels on the base which are adjustable up and down, left and right. It has large plain cast attachment plates. There are two small pulleys on the lower arm. A part is probably missing. There are no ear plugs for the face bow. The adjustable pin on the lower columns are maked L, R and P.
An impossible machine for use in general practice.