tonometer, subset
Date1880-1900
Inventory Number1998-1-0140b
ClassificationTonometer
Subject
Maker
Valantine & Carr
fl. 1870 - 1930
Cultural Region
Place of Origin
Dimensions2 x 12.3 x 12.3 cm (13/16 x 4 13/16 x 4 13/16 in.)
Material
DescriptionSeven tuning fork tonometer set without resonating boxes, held in a small velvet-lined leather box. Designed to be used with the 65-fork tonometer 1998-1-0140a.
Each fork has been stamped with the maker's name on one side and its frequency on the opposite. This subset was made for frequencies ranging from 516 to 540 VD (or vibrations doubles).
As several other acoustical instruments in the collection, this one has an old location number inscribed on an oval paper glued to the base: 21-2-6. There is another old location number stamped on this instrument: 23-16.
Each fork has been stamped with the maker's name on one side and its frequency on the opposite. This subset was made for frequencies ranging from 516 to 540 VD (or vibrations doubles).
As several other acoustical instruments in the collection, this one has an old location number inscribed on an oval paper glued to the base: 21-2-6. There is another old location number stamped on this instrument: 23-16.
Signedon each fork: VALANTINE & CARR
Inscribedtop of case, stamped: 516-540
Curatorial RemarksHoused in blue board lidded box with 1998-1-0140a
FunctionWas used for precise measurements of beats. It was invented by Johann H. Scheibler and it usually came with resonators to amplify the forks' pitches and beats. The resonators were not necessary though.
Valantine & Carr
Date: circa 1880
Accessories: has bolt
Object number: 1998-1-0675
Valantine & Carr
Date: circa 1880
Accessories: bolt
Object number: 1998-1-0674
Rudolph Koenig
Date: circa 1889
Object number: 1997-1-0884
Rudolph Koenig
Date: circa 1889
Object number: 1998-1-0274
Rudolph Koenig
Date: circa 1865
Object number: 1997-1-0887
Rudolph Koenig
Date: circa 1865
Object number: 1997-1-0877
American
Date: 1890-1920
Object number: 1997-1-0985
See also/See also
