BAIRD &TmOCK (LONDON) LTD. 



1039 T If desired the apparatus may be supplied with an arrangement for the projection of 

 lantern slides or sections consisting of a special stage . . . . . . extra 



1040' A projection objective, anastigmatic 



1041 1 The Rheostat is charged extra, and the price depends upon the nature of the current to 

 be used. For 100 to no volts, 17/6 ; 200 to 220 volts, 27/6. 



1042' Eyepiece micrometer, for placing on the diaphragm of the eyepiece, being 5 millimetres 

 divided in 100 parts 



1043 T Eyepiece micrometer, 10 millimetres divided in 100 parts . . 

 1044 T Stage micrometer, I millimetre divided in 100 parts on glass 

 1045 T Stage micrometer, photographed scale, 2 millimetres divided in 200 parts 



100 

 4 10 



060 

 050 

 090 

 050 



1046 (Analyser). 1046 (Polariser). 



1046 T Polarising Apparatus for food analysis 



The analyser forms part of an eyepiece which fits into the tube of the microscope, and is provided with a 

 graduated disc and index. It is fixed in any desired position by means of a thumbscrew. The polariser, when 

 used in connection with Stands A, B, C, D, la and Ib, fitted with either of the illuminators, a or b, is hung in the 

 carrier of the iris-diaphragm. When used on stands provided with the- smaller illuminators, c or d, it has to be 

 specially mounted so as to take the place of the cylinder diaphragm, and, if desired, may be furnished with a 

 condensing lens (53. extra) . 



1047 T Simple Polarising Apparatus. The analyser is without an eyepiece and has no graduated 

 disc. The polariser is as described above 



1048 T Selenite and Mica Films. Set of eight .. 



1049' Object Marker, fitted with a writing diamond, with the aid of which a circle may be 

 drawn round the object 



This facilitates the process of finding any particular part of a specimen by surrounding it by a visibly marked 

 circle. To mark a certain portion of an object as seen under the microscope the lens should be replaced by the 

 object marker. 



10 



CROSS STREET HATTCHSr GARDETST, E-C 



