DESCRIPTION OF PLATE 1. 
New High Grade Galvanometer. 
Fig- 1- Elevation. 
A. Fine adjustment in azimuth for control magnets. 
B. Coarse adjustment for raising or lowering same. 
C. Fine 
D. Brass frame or bridge carrying control system. 
E. Tron slabs forming’ magnetic screen. 
F. Wooden stand carrying iron slabs. 
O. Brass ring carrying D, supported by three levelling screws on lead 
pillars, H. 
H. Lead pillars carrying G. 
I. Ebonite slab insulating and supporting coil system ( e , e, &c., fig. 2). 
J. Glass and paraffin insulators supporting ebonite slab I. 
K. Concrete slab supporting the whole apparatus. 
L. Sandstone pillar supporting K. 
IVIj, Mo. Top control magnets. 
N l5 No. Bottom control magnets. 
O. Wooden carriage for N 1} N e . 
Fig. 2. Section. 
A—0. Same as in fig. 1. 
Q. Position of millboard case enclosing the coils, &c. 
Details of coils and mounting (small letters). 
a, a. Ebonite terminals, 
b, b. Brass frames carrying coils. 
c and d. Brass base. 
e. Brass cell, in which the whole of the coils and magnet system are free 
to turn. 
ff Levelling screws. 
Fig. Coil support in plan and section. 
a, a. Ebonite terminals. 
b, h. Brass frame. 
g, g. Quartz rods supporting coil. 
h, h. Brackets carrying quartz rods. 
/, i. Carriage fastened to b , 5, but adjustable to magnet system by leaving a 
play in the holes. 
j. Magnet forming part of system. 
1c. Wire forming coil. 
L Paraffin mounting. 
n. Ebonite mounting. 
m. Glass front supporting a pair of ebonite pillars, a, a. 
