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