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