Decca constant frequency record No.1. Exp.55.
'World' constant-linear-speed record
1922
RCA Victor long playing record of 1931.
1931
Shure Trackability Test Record TTR-101 (33 1/3 r.p.m.) by Shure Brothers Inc
1967
12 inch vinyl LP disc test record
1955-1965
12 inch vinyl LP disc test record
1955-1965
12 inch vinyl LP disc record
1959
10 inch shellac 78 rpm disc record
1933
Frank Chacksfield and his Orchestra 7-inch vinyl single
1972
Two early long-playing (LP) records, 1951-1960
1950-1991
Vinyl record, the voice of Lord Kelvin.
1978
10 inch shellac 78 rpm experimental stereo disc record
1934
Class 40 locomotive no 40155
Stereophonic demonstration test record, 1958
1958
Record, double-sided 12" twin-grooved
1938 (February 1938)
Zonophone 5" record
Three records of gravity determinations made in the Atlantic Ocean
1932
Atmospheric electricity records made with Water Dropper and Dale Zalek electrometer at Eskdalemuir Observatory
1910
Record, single-sided 10" marked "PERMAREC" (untitled) from the effects of Lawrence Savage
1930-1940
Imperial miniature (3 1/2") record
Record with hybrid magnet and vibrator
British Railways Technical Centre - Locomotive Testing Station Records, Rugby
Atmospheric electricity records of varying positive potential gradient at Kew Observatory
1909-1910
Atmospheric electricity records of potential gradient varying between positive and negative
1909-1910