114с

1954г

MAGNETIC VARIOMETERS OF THE SCHMIDT TYPE

277

Their full use and maintenance illustrated by details of the HILGER & WATTS VARIOMETERS

by

J. McG. BRUCKSHAW

Ph.D., M.Sc, D.I.C., F.Inst.P.,

reader in geophysics, imperial college

Published by

HILGER & WATTS LTD., HILGER DIVISION 98 ST. PANCRAS WAY, LONDON, N.W.i