No. 29 H London Microscope. 
This model has a wide scope of usefulness for a great variety of purposes. It has the rigid 
stand and delicate adjustments of the No. 29 microscopes, and is also provided with a circular 
rotating stage with two side screws which may be used to centre the axis of rotation of the stage, 
or as a delicate means of moving the object, forming a mechanical stage with a limited travel. 
The stage is divided upon the edge in degrees for such purposes as petrological investigations 
or for determining the angles of crystals. The substage has focussing and centring adjustments, 
and has the additional feature of swinging out of the axis. This is a convenience for the rapid 
change or removal of substage apparatus. A rack and pinion drawtube with extension, giving 
a range of tube length from 140 to 200 m/m., can be supplied. 
No. 29H. Stand only in case... a Sirs oe a so Lp OeO 
No. 29H (1). Stand only in case ... bes Ba ves Sete Wee Sl EG 
No. 3260. 3 Eyepieces, 42 m/m, (xX 6), 25 m/m. (x 10) 
~ 
oo 
— 
com) 
and: l7 amijm- (ex 15) L1G: 70 
No. 3230. 14 in. Object glass, 32 m/m. 2 D0 
No. 3231. in. Object glass, 16 m/m. . Seis PeLORAO 
No. 3234. gee Object glass, arte : 315 0 
No. 3235. + in. Object glass, 2 m/m., oil immersion . 6 10 O 
No. 3288. Achromatic condenser N. Neal ee 515 0 
No. 3293. High power focussing dark ground illuminator Gay 
No. 3302. Dust-tight quadruple nosepiece aa: ata 
No. 3298. Stop for + in. object glass . 0 2 6 
£45 16 0 
No. 29H (2). Stand only in case leh Oe, 
No. 3268. 3 Compensating. ey epieces, 45 m/m. a 6), 
22 m/m (x U1) and 10 ami/m. (<-25) 2 
No. 3240. 14 in. Apochromatic object glass, 40 m/m... 410 0 
No. 3241. %in. Apochromatic object glass, 16 m/m.... Talo 70 
No. 3242. 4in. Apochromatic object glass, 8 m/m.... Sa) 0 
No. 3245. in. Apochromatic object glass, 4 m/m.... P20 0) 
No. 3250. 3 in. Apochromatic object glass, oil im- 
mersion, 2 m/m. N.A. 1.2 sisi 13) 07-0 
No. 3291. Dry and immersion achromatic condenser 
INFACeI Eos: as 3% sie bee 915 0 
No. 3288P. Set of patch stops Ses 0-7 6 
No. 32938. High power focussing dark ground illuminator Os ie 16 
No. 3280. Sloan objective changers with 6 fittings in 
cases is ssi ee ee Orc? 
No. 3306. Circular mechanical stage son any: ne 12 0 0 
— {108 15 6 
No. 3309A. Rack and pinion drawtube = ae. ds se eRe xtia 3.15 
No. 3781. High power binocular eyepiece, angular model ... “st ea ae 13 10 
No. 3779. Angular eyepiece attachment ee a sis Bee a ie Pets 70 
No. 3657. Eyepiece camera with observing tube... ast a aes me 12 12 0 
No. 3345. —_ Polarising apparatus... si So sie a a oak Bee 4 4 0 
No. 3359. —_ Beck Aplanatic ring illuminator ... ane oe nee sis be 2 10570 
Any apparatus can be added or omitted at a corresponding addition or reduction in price. 
23 
