60-inch Rockefeller north pier and drive

The north pier of the 60-inch Rockefeller, showing the RA wheel & circle, a short section of the polar axis, and the drive assembly with the cover removed. n/a. Extent: 1 glass plate. Size and dimensions of original material: Height 8.2cm, width 10.7cm, thickness 0.3cm. Condition of original material: Stable. Author(s)/Creator(s): English. Scribe(s): Latin. Publisher(s): Left-to-Right. Editor(s): Unrestricted. Volume number: N/a. Original institution reference: PLB20_03_2098.