Acquire. Use E-1328.MICA DIAPHRAGMS, (on
table)
These were made the
Edison Phonograph Works. Reproduce.
DISC RECORD BLANK (on
table)
Used for record experiments. EDIS collection reproduce. Use EDIS 1283. Use EDIS 25211/25212. Use EDIS 23792.
OPEN SHELVING (on south
section wall)
Figure 23.
203
.
Clear CELLULOID RECORD
(on table)
Used for record experiments.
DISC MICROSCOPE (on
table)
Used for record experiments.
WAX BLANK, brown (on
table)
Used for record experiments.
See Voucher 78, November
1910.
MICA SAMPLES (on table) See Laboratory Notebook.
BOTTLES, various sizes,
labelled (on shelves)
Figure 23.
Reproduce
