BAIRD &TATLOCK. (LONDON) LTD. 



940 



941 



942' 



943' 



945' 



946' 



947' 



948 T 

 949 T 

 950' 



Large Microscope la (LeiU) , with horseshoe foot, or English foot. The stand is inclin- 

 able and fitted with revolving and centring stage, coarse adjustment by rack and pinion, 

 fine adjustment by micrometer screw with scale reading to ^ mm. Draw-tube with 

 millimetre scale. Large substage (b) with rack and pinion and iris diaphragm with 

 oblique movement. The cylinder diaphragm and condenser are readily interchangeable. 

 Triple nosepiece; objectives 2, 4, 6, ^ oil-immersion, N.A. 1.30; eyepieces I, III, IV, V ; 

 magnifications 29 1260 . . . . each 



Same Stand with Substage (b) ; triple nosepiece ; objectives 3, 6, T V oil-immersion, N.A. 

 1.30 ; eyepieces I, III, IV ; magnifications 511050 . . . . . . each 



Same Stand with substage (b) ; triple nosepiece ; objectives 3, 6, 8 ; eyepieces I, III, IV ; 

 magnifications 51 691 . . . . . . . . each 



943-946 Stand Ib. 947-950 Stand III. 



Large Microscope Ib (Leitz), differing from Stand la., only by the form of the stage. 

 The latter is of the fixed square pattern. The stand is inclinable and has a clamping 

 lever, draw-tube with millimetre scale, coarse adjustment by rack and pinion, fine 

 adjustment by micrometer screw with graduated head reading to T J n mm. The 

 substage is the same as that of Stand la. Triple nosepiece ; objectives 3, 6, T V oil- 

 immersion, N.A. 1.30 ; eyepieces I, III, IV ; magnifications 51 1050 . . each 



Same Stand with Substage (c) ; triple nosepiece ; objectives 3, 6, J^ oil-immersion, N.A. 

 1.30 ; eyepieces I, III, IV ; magnifications 51 1050 . . . . . . each 



Same Stand with Cylinder Diaphragm instead of the substage ; double nosepiece ; 

 objectives 3, 7 ; eyepieces I, III ; magnifications 51 500 . . . ., . . each 



Same Stand with Cylinder Diaphragm ; objectives 3, 7 ; Eyepieces I, III ; magnifica- 

 tions 51 500 . . . . . . . . ..... . . . . each 



Stand III is now provided with a rack and pinion coarse adjustment instead of the sliding 

 tube. A nosepiece may thus be used on it to advantage. It will be found to be an 

 excellent and inexpensive class microscope. 



Medium Size Microscope III (Leitz), with iron foot and upright cast in one piece, coarse 

 adjustment by rack and pinion, fine adjustment by micrometer screw. The draw-tube 

 has a millimetre scale. Plane and concave mirror, and wheel-diaphragm. Triple 

 nosepiece ; objectives 3, 6, 8 ; eyepieces I, III ; magnifications 51 553 . . each 



Same Stand ; triple nosepiece ; objectives 3, 5, 7 ; eyepieces I, III ; magnifications 51 500 



Same Stand, double nosepiece ; objectives 3, 7 ; eyepieces I, III ; magnifications 51500 



Same Stand, objectives 3, 7 ; eyepieces I, III ; magnifications 51500 .. .. each 



20 



18 10 

 15 10 



17 15 



16 5 



9 5 



8 10 



8 5 

 7 10 

 6 



5 





 

 

 



CROSS STREET HATTCnST GARDETST, E-C- 



