Weston standard cell type D-402-A serial no.154508, by Muirhead and Co. Ltd. Weston standard cell type D-402-A serial no.154508 1950
Frequency analyser type D-669-A No.255341 by Muirhead and Co Ltd, 30Hz to 30kHz in six ranges Frequency analyser type D-669-A No.255341 by Muirhead and Co Ltd 1960-1969
pH meter type D-303-B with spare dip electrode made by Muirhead and Co. Ltd., Beckenham, Kent, 1940-1950 pH meter type D-303-B with spare dip electrode made by Muirhead and Co. Ltd. 1940-1950
Muirhead-Wigan Decade Oscillator, Type D-890-A, by Muirhead &Co. Ltd., serial no. 416080, French patent no. 873458, range up to 11,111 Hz, c. 1980. Muirhead-Wigan Decade Oscillator 1964
Muirhead-Belin portable picture transmitter scanning unit with phone attachment and two-piece carry case, type D-368-AM, no. 144985 M, Muirhead and Coompany Limited, Beckenham, 1948 Muirhead-Belin portable picture transmitter scanning unit, 1948 1948
Standard resistance type D-558-C, 2 Megohm +- 0.5%, by Muirhead and Co. Ltd., Beckenham, Kent, no.179031 Standard resistance type D-558-C 1950
Tin of John Bell's toothpowder, by John Bell, Hills and Lucas Ltd. London, 1930-1960 Tin of John Bell's toothpowder, c 1930-1960. 1930-1960
Weston standard cell type D-550-A, serial no.310439, by Muirhead Weston standard cell type D-550-A 1960
Muirhead-Pametrada Wave Analyser type D-489-GM, serial no.349364 in fitted wooden case, plus Supply Unit type D-489-GS serial no.347228 also in fitted wooden case, plus the following accessories (stored in the base of the power supply case): headphones, connecting cable, mains lead (without plug) and input lead, made by Muirhead & Co Ltd in about 1960 Muirhead-Pametrada Wave Analyser type D-489-GM 1960-1964
Temperature-controlled precision standard cell type K-231-A serial no.416723, by Muirhead and Co. Ltd., Beckenham, Kent, England (with heavy metal base) Temperature-controlled precision standard cell type K-231-A serial no.416723 1965
Transcutaneous Aortic Velograph, model TAV 1006, designed by Henry H Light, manufactured by Muirhead Medical Ltd, Kent, 1974 Transcutaneous Aortic Velograph 1974
Enlarger, type D-496-A no. 163417 by Muirhead and Co. Ltd., January 1949 with stand, 6-piece spare plate holder, focussing screen, 10 masks and one red filter Enlarger, type D-496-A no. 163417 by Muirhead and Co. Ltd. 1949