Tonometer
An Illustrated Dictionary of Words Used In Art and Archealogy. · 1883 · p. 35
A delicate instrument for tuning musical instruments, by marking the number of vibrations.
Bu kavram başka kaynaklarda da geçiyor
The American Illustrated Medical Dictionary (1913)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
The Student's Medical Dictionary (1896)
An Illustrated Encyclopedic Medical Dictionary (1894)
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