Phonendoscope dating from around 1900, England. This device was used in the early 20th century for listening to internal sounds of the body (auscultation). The sounds would be intensified by resonation of the two circular plates attached to the bell-shaped receiver.
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Details
Creative#:
TOP11721008
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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NO
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