J.M. Ney Company
Fully adjustable, machine polished, anodised aluminium incisal pin adjusted height and anterior-lateral angles. The upper arm has removeable 'condyles' and are adjustable up and down, in and out. The condyle heads a spherical and adjustable up and down, left and right, all with engraved scales. Casts are held by plates (missing). There is a separate upper arm.
A complicated, well made machine of the 'precision' type.