portable galvanometer
Date1896-1928
Inventory Number0394
ClassificationGalvanometer
Subject
Maker
W.G. Pye & Company, Ltd.
1896 - 1928
User
Radcliffe College
1894 - 1999
Cultural Region
Place of Origin
Place of Use
Dimensions10.1 × 10.6 × 11.5 cm (4 × 4 3/16 × 4 1/2 in.)
blue board box: 11.4 × 38.4 × 31.1 cm (4 1/2 × 15 1/8 × 12 1/4 in.)
blue board box: 11.4 × 38.4 × 31.1 cm (4 1/2 × 15 1/8 × 12 1/4 in.)
Material
DescriptionA horizontal, fan-shaped galvanometer of cast level or type-metal. The narrow end of the case has a brass post containing a string suspension of a very small coil in a round permanent magnet. The edge of the post is knurled and the flat top is marked, "SET - ZERO", with a double headed arrow inscribed on it. Through an arc-shaped display window, the instrument scale is visible, marked 40-0-40. The display has a knife-edge pointer. The top of the case has a round bubble level.
The instrument case is supported on three legs, two of which are levelling screws. The case has two large binding posts with hard rubber caps.
The instrument case is supported on three legs, two of which are levelling screws. The case has two large binding posts with hard rubber caps.
Signedprinted above scale: W.G. PYE AND CO. CAMBRIDGE / MADE IN ENGLAND
Inscribedtop of post engraved: SET - ZERO;
printed instrument scale, 40-0-40;
stylized logo/type stamped on case: W.G. PYLE & Co. / ENG / CAMBRIDGE
FunctionGalvanometer, measures electrical current in a circuit.
ProvenanceFrom the attic in Byerly Hall (Radcliffe) 10/13/64.
Weston Electrical Instrument Corporation
Date: circa 1925
Accessories: shunt (0531b); box of 6 screws, two modified bolts, and one small piece of wood (all these originally housed in petri dish, now transferred to archival box)
Object number: 0531a
W.G. Pye & Company, Ltd.
Date: circa 1920
Accessories: 5 accessory parts:
2 magnetic rods with spherical ends;
one brass notch;
needle with tip inserted into cork;
Object number: 1997-1-0662
Weston Electrical Instrument Corporation
Date: 1911
Accessories: shunt (0438b)
Object number: 0438a
Weston Electrical Instrument Corporation
Date: late 19th Century
Accessories: two shunts (#0270b and #0270c); special leads
Object number: 0270a
Rawson Electrical Instrument Company
Date: circa 1930
Object number: 0428