xxviii 
Advertisements. 
L. 
Surveying, Meteorological and Electrical Instrument Maker 
To the Admiralty, Ordnance, Board of Trade, and other Government Departments, various 
Observatories, Foreign Governments, the Army, the Navy, &c., &c, 
Range Finders. 
Telemeters. 
Transit Theodo¬ 
lite. 
Theodolites. 
Artificial Horizons. 
HYPSO METERS. 
Levels. 
Mountain Baro¬ 
meters. 
Mariotte Barometer. 
Aneroid Baro¬ 
meters. 
Pocket Sextants. 
Altazimuth. 
Alpine Set of Thermo- 
; METERS. 
Clinical Thermo¬ 
meters. 
Special Instruments 
made far Travellers* 
Explorers* Engineers , 
&c., tfcc., and as sup¬ 
plied to the Members of 
the Royal Geographical 
and other Societies. 
Livingstone’s Bain 
Gauge. 
Prismatic Compasses. 
Colonel Stewart’s 
Compass. 
Clinometers. 
Air Meter. 
Tape Measures. 
Telescopes and 
Binoculars. 
Dip Circles. 
Portable Eleo 
trometer. 
Heliographs. 
Chronometers, 
Marine and 
Pocket. 
Gun and Torpedo 
Directors. 
1477 
HOLBORN BARS, 
LONDON, E.O. 
Telegraphic 
Address — | 
“ESCUTCHEON, 
LONDON.” 
