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