Precision Wavemeter, GR224-L , No.238
Inventory NumberRS0427
ClassificationWave Meter
Maker
General Radio Company
1915-present
Place of Origin
Dimensionsbox: 30 x 49.1 x 29.1 cm, 39 lb. (11 13/16 x 19 5/16 x 11 7/16 in., 17.7 kg)
DescriptionPrecision Wavemeter, GR224-L , No.238, (General Radio-Cruft). Gift of Mr. George E. Cabot, Boston
Signedetched and white filled on top, top center: PRECISION EAVEMETER / TYPE 224-L SERIAL NO. 283 / GENERAL RADIO CO. / CAMBRIDGE MASS. / 15-600 METERS / M021541
on face of meter: WESTON / THERMO-GALVANOMETER / CURRENT SQUARED / RADIO FREQUENCY / RES. = 4.5 OHMS I=115 M.A. / WESTON ELECTRICAL INSTRUMENT CO., NEWARK, N.J. U.S.A. / MODEL 425 NO. 6975
Inscribedetched and white filled on top of 1 condenser: COIL A / 15-28 METERS / SERIAL No. 283 / M-21541-A
etched and white filled on top of 1 condenser: COIL B / 28-50 METERS / SERIAL No. 283 / M-21541-B
etched and white filled on top of 1 condenser: COIL C / 50-90 METERS / SERIAL No. 283 / M-21541-C
etched and white filled on top of 1 condenser: COIL D / 90-165 METERS / SERIAL No. 283 / M-21541-D
etched and white filled on top of 1 condenser: COIL E / 165-300 METERS / SERIAL No. 283 / M-21541-E
etched and white filled on top of 1 condenser: COIL F / 300-600 METERS / SERIAL No. 283 / M-21541-F
written in pencil inside lid of box: #3- / H.S. Price
written in pencil on side of box: 224-L / M21541 / F.W.C.
stamped in black on top: 224-L
![precision wavemeter, General Radio model No. 224, Serial No. 113 [?]](/internal/media/dispatcher/44354/postagestamp)
General Radio Company
Date: early 20th Century
Object number: RS0243b
General Radio Company
Object number: RS0783
General Radio Company
Date: 1920-1935
Accessories: key tied to handle
Object number: RS0229
General Radio Company
Date: 1915-1930
Accessories: set of five coils (labelled A - E); tuning variable capacitor
Object number: RS0233
General Radio Company
Date: early 20th Century
Accessories: diagrams (3)
Object number: RS0251
