eote NCE 
SINGLE CoPiEs, 15 cts, 
NEW SERIES. 
VoL. XIII. No. 323. FRripay, Marcu 8, 1901. ANNUAL SUBSCRIPTION, $5.00. 
QUEEN INSTRUMENTS 
— mal 
New 
Queen Wall Pattern 
Galvanometer 
i 
The Moving Coil in this Galvanometer is of small diameter and light weight. 
dead beat and will then give readimgs with much greater rapidity than other forms on the market. 
arranged for Ballistic work the period of swing can be made as desired. 
Circular 500 describes this and a number of other new instruments in detail. 
PHYSICAL APPARATUS INDUCTION COILS ELECTRICAL TESTING INSTRUMENTS 
QUEEN & CO., INc. 
J. G. GRAY, President 
ELECTRICAL AND SCIENTIFIC INSTRUMENTS 
59 Fi A »N Y 4 co 
Fema Btua Chicago 1010 Chestnut St., Philadelphia, Pa. 
480 Monon Bldg.,.Chicago 
It can be made 
When 
