70.010-4013-901.pdf

This is a technical engineering drawing/blueprint document dated September 13, 1955, prepared by Douglas Technology Group. The drawing depicts a detailed mechanical assembly with multiple cross-sectional views, component details, and dimensional specifications. The document includes Plan A (overhead view of a complex circular mechanism), Plan B (a detailed sectional view), and Plan C (component-level detail drawings) showing various structural elements, fastening points, and engineering specifications typical of aerospace or industrial equipment design.

The drawing contains comprehensive technical specifications including measurements in feet and inches, material callouts, assembly notes, and multiple detail sections labeled for reference. The document appears to be part of a larger engineering package for manufacturing or construction purposes, with a title block indicating it represents a General Department of Supervisors drawing. The blueprint quality and notation style are consistent with mid-20th century federal contracting documentation, though the specific contract vehicle, agency, procurement type, response dates, or pricing information are not clearly legible in this image quality and format.