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Evershed's portable ohmmeter no.20818

Evershed's portable Ohmeter no.399

Evershed's portable Ohmeter

Evershed's Ohmmeter no.2

1889

direct reading insulation/resistance indicator

ohmmeter

"Metrohm" moving coil ohmmeter for use with external battery

Fixed coil moving needle ohmmeter

1881

Evershed ohmmeter

circa 1905

Ohmmeter made by Record of Broadheath. Used in the 1960s by James Alan Ridehalgh

1925-1935
Direct reading ohmmeter no. 23008 by Everett, Edgcumbe and Co. Ltd, c1903. an upright rectangular box, broken carrying handle rests upon three feet. A hinged cover on top is raised to gain access to two circular glass faces. One face displays a pointer register mechanism, which is adjusted for readings

Direct reading ohmmeter no. 23008 by Everett

1903
Ohmmeter with calibration chart, made by the Keys Electric Co. Ltd, London, c.1892.

Ohmmeter with calibration chart

circa 1892
Evershed's ohmmeter, patent, No 7911, portable testing set.

Evershed's ohmmeter, patent, No 7911