Shelfmark

Wtt.1

Maker

E.R. Watts & Son; Ltd.

Subjects

surveying (magnetic force variometer; tacheometers; levels; levelling staves; aneroids; compasses)

Title

Geophysical Surveying Instruments

Description

Includes a lot of detail about the ‘Vertical Magnetic Force Variometer’.

Earliest Date

Latest Date

Pages

20

Address

104 Victoria Street, London, S.W.1 [England]

Other Makers

Cat no

217

Contents List

Hardback

Prices

Yes

Index

Illustrations

Yes

General Ref