OPTICAL OUTFITS WITH ACHROMATIC OBJECT GLASSES. 
Set F. No. 3285. Condenser and iris diaphragm ‘c Be es ee es: 
No. 3260. 2 pairs Eyepieces (x 6) and es 10).. 3 2) 3-10 
No. 3231. 4% in. Object glass oe ay is an 110 0 
No. 3234. 4 in. Object glass 315 0 
No. 3300. Double nosepiece Phe) 
£10 3 6 
Set G. Set as above, but with 
No. 3235. 4 in. Oil immersion object glass and No. 3301 triple nosepiece 
in place of No. 3300 double nosepiece ... are ban sone lige 
Set H. No. 3288. Achromatic condenser in centring fitting ... Loe lOO 
No. 3260. 3 pairs Eyepieces, ( x 6), (10) and (x 15) 312 0 
No. 3231. % in. Object glass Bee me ae ae EO 0 
No. 3232. 4% in. Object glass... abe oe sie ane 3.5 0 
No. 3234. F in. Object glass 3 15° 10 
No. 3235. +; in. Oili Here orn object glass 6 10 0 
No. 3298. Stop for 4 in object glass... 0: 2.6 
No. 3293. High power focussing dark ground illuminator in 
centring fitting na Sis 6G 32, 76 
No. 3820. Low power dark ground illuminator Tee Ae a 0710 
No. 3302. Quadruple nosepiece ... 115 0 
—— {38 2 0 
OPTICAL OUTFITS WITH APOCHROMATIC OBJECT GLASSES. 
Set J. No. 3288. Achromatic condenser in centring fitting ... poe A) NO 
No. 3266 and 3268. 2 pairs Compensating eypieces (x 6) 
and (x 11) hes see sec oe oe 9 4 0 
No. 3241. #%in. Object glass _.... ae ses a Bes teow O 
No. 3244. 4in. Object glass ~ oe, ate See ae elle OL ae) 
No. 3300. Double nosepiece D0 
——— {35 10 0 
Set K. Set as above, but with 
No. 3248. 44 in. Oilimmersion object glass N.A. 1.3 and No. 3301 triple 
nosepiece in place of No. 3300 double nosepiece os: 1. Los lOO 
Set L. No. 3291. Dry and immersion achromatic condenser N.A.1.3 
in centring fitting : ee LOMO ZO 
No. 3266, 3268, 3270. 3 pairs Compensating evepieces (<6); 
(x 11) and (x 25) ... . 14 4 0 
No. 3241. % in. Object glass... sels a se oe 75, 0 
No. 3242. 4 in. Object glass... os aa: on se 9105-0 
No. 3244. § in. Object glass... T0560 
No. 3250. 3) in. Oil immersion object glass N.A. 1.2 ap with 
eee tosNE AS OO) ee: amy Ss OF 0 
No. 3249. 4 in. Oil immersion object glass, N.A. 1.4 tee 0 OMO 
No. 3293. High power focussing dark cea illuminator in 
centring fitting é 560 ae. 6 2 6 
No. 3820. Low power dark ground illuminator. 5 — 5710750 
No. 3302. Quadruple nosepiece ... : ae oes 115 0 
—— {108 16 6 
If optical outfit is required for monocular only, the cost of the eyepieces is halved. 
If the microscope stand is fitted with centring substage, the cost of achromatic condensers and 
high power focussing dark ground illuminator is reduced 15s. 0d. 
Any apparatus can be omitted from these sets or other apparatus added at a corresponding 
difference in price. 
47 
