No. 3190. 
No. 3191. 
No. 3192. 
No. 3193. 
No. 3194. 
No. 3090. 
SETS OF APPARATUS FOR USE WITH RADIAL RESEARCH MICROSCOPE. 
Set A. No. 
Set B. No. 
. 3293. Beck patent focussing high os dark < ground 
é : 5 7 6 
. 3397. Metal holder for 4 mm. slides ist OAGRRG 
. 3398. 124 m/m. slides for No. 3397 oe 0 5 0 
. 3266. Compensating eyepiece, 45 m/m. (x 6) Pays AW) 
. 3268. Compensating eyepiece, 22 m/m. (x 11) 2 LOLEO 
Radial Research Microscope. 
Stand, coarse and fine focussing adjustments, focussing stage, 
focussing and centring substage, mirror, in case. 
Stage, square, with cut out front, vertical and lateral mechanical motions, 
vernier scales and clamp to vertical motion. 
Substage with three Akehurst slides for condensers and illuminators, 
two similar slides for stops and colour filters, and with iris 
diaphragm. 
Drawtube bracket on solid extension fitting, with rack and pinion 
adjustment, extra telescopic sliding tube with divided scales to 
both adjustments. 
High power binocular body on extension arm with rack and pinion 
adjustment to use interchangeably with monocular body and 
drawtube. 
Greenough binocular body on separate carriage which focusses by 
rack and pinion on the main fitting of the limb. 
Polarising apparatus with polarising and analysing prisms in fittings 
with link motions by which they are rotated, together with large 
divided circle, separate rotations to each prism clicked at four posi- 
tions and with divided circles, independent swing-out adjustments to 
each prism, eyepiece with cross lines, slot for quartz wedges 
Regular Model Stand, coarse and fine adjustments, focussing stage, 
focussing and centring substage, complete with slides and _ iris 
diaphragm, square stage as above, 2 in. body with drawtube, 
MUTTOF, IM).case ~... 
Regular Model Stand as No. 3191, ‘but with circular rotating mechani- 
cal stage with centring adjustments, in case 
Regular Model Stand as No. 3191, but with high | power 
binocular body and interchangeable monocular body in case 
Regular Model Stand as No. 3191, but without substage, in case ... 
Rack and pinion drawtube with additional sliding drawtube to stands 
Nos. 3191, 3192, 3194 ... hier eh a Ep pee extial 
3291. Beck dry and immersion achromatic and 
aplanatic condenser 1.3 N.A. £9 15 0 
. 3293. Beck patent focussing high Ces dark k ground 
illuminator... BS TG 
. 3397. Metal holder for } m/m. slides 0-6) 46 
©3398. 12:4 mm. slides forsNo. 3397 ~... 0 5 0 
. 3266. Compensating eyepiece, ia m/ms (<6 ie PA) 
. 3268. Compensating eyepiece, 22 m/m. (xX 11) Z 1020 
. 3270. Compensating eyepiece, 10 m/m. (xX 25) 25107 70 
. 3241. 2 in. Apochromatic object glass, 16 m/m. ih lly 0) 
. 3242. 4in. Apochromatic object glass, 8 m/m. 910 0 
. 3247. in. Apochromatic oil immersion pie! glass 
Som (Tie ey. Us io 20580 
. 3830 Sloan objective changer and 3 fittings, in case.. 217 O 
3291. Beck dry and immersion achromatic and 
aplanatic condenser 1.3 N.A. 9°15 
a) 
illuminator 
o7 
£250 0 
108 0 
108 0O 
136 O 
9T= 0 
5 0 
£57 18 
0 
