Sm: No. 4960. Vertical illuminator, with adjust- 
1 able illuminating prism or thin 
glass reflector. This illuminator 
gives two adjustments to the 
reflector, one of which moves the 
light up and down, and the other 
right and left 
No. 4962. Prism or thin glass reflector 
to use interchangeable with the 
one in No. 4960 ... 
No. 3345. Polarising apparatus, 
comprising polariser in revolving fitting 
to ht to substage, analyser in revolving 
fitting to fit nosepiece or fit over eye- 
piece. Selenite plate is provided with 
polariser .. 
No. 3377. Polarising apparatus with 
lens system to correct astigmatism 
No. 3328. Double wedge light moderator on 
stand. This consists of a frame which carries 
two neutral tint glasses which slide in fittings 
so connected that they move together in oppo- 
site directions to vary the density of neutral 
glass interposed between the source of light and 
the microscope. The frame carrying the glasses 
has fittings for the reception of colour filters or 
diaphragms. The moderator can be adjusted to 
any height above the table between 2 and 8 in. ... 
No. 3315. Bulls’ eye condenser, 2} in. 
diam. lens with complete adjust- 
ments 
No. 3315A. Bulls’ eye condenser, 24 in. 
t 
only 
No. 3317 Bulls’ eye condenser, 13 in. diam. 
lens, with iris diaphragm and 
screen holder, on stand as No. 3315 
No. 3316. Bulls’ eye condenser, 13 in. 
diam. lens, with complete adjust- 
ments ae 
No. 3316A. Bulls’ eye condenser, achro- 
matic and aplanatic, 1-2 in. 
diam. on adjustable stand, as 
No. 3316 
GO 
ww 
No 3315 
£1 
i) 
St 
17 
10 
15 
6 
0 
