Accession Number: 2006.2.4b-f
Description: Black-and-white glossy polaroids of magnified and projected images of flexible phonograph disc grooves. Images were first magnified using a Nikon Microsope and video camera attachment.
Medium: Photographic Paper
Print Size: 4.25" (h) x 5.75" (w)
Date: 1983
History/Provenance: Photos taken by APH staff. Kept with a company in-house report in the company's Machine Shop, which later became part of the Maintenance Department.
Credit Line: APH Archives, 2006.2
Subjects: Manufacturing processes Sound recording and reproducing Photographs