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Instrument for measuring fire damp in mines

Measuring instrument

Instrument for measuring fire damp in mines with six pairs of spare filaments and pamphlet by E.H.T. Liveing Esq.

Instrument for measuring fire damp in mines

Instrument for measuring fire damp in mines with six pairs of spare filaments and pamphlet by E.H.T. Liveing Esq.

Instrument for measuring fire damp in mines

Frequency and time measuring instrument type TSA3436 by Venner Electronics Limited, 1965 with cover

Frequency and time measuring instrument type TSA3436 by Venner Electronics Limited

1956
Measuring instrument, made by Cambridge & Paul, 1923, London England.

Cambridge & Paul measuring instrument

1923