NEw SERIES. j SINGLE C 6 
Vou. XIII. No. 337. Fripay, June 14, 1901. feria eae eR eit 
QUEEN INSTRUMENTS 
i 
New 
Queen Wall Pattern 
Galvanometer 
“ul 
The Moving Coil in this Galvanometer is of small diameter and light weight. It can be made 
dead beat and will then give readings with much greater rapidity than other forms on the market. When 
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 
PEOIMGTES Bee Gihcaae 1010 Chestnut St., Philadelphia, Pa. 
——— SE 
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( JUN 151901 
LAS WV... 4s Son eae 
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