226 



Measuring of Lengths, Angles, etc. 



No. :.l 473 



;!;-i!il^ ; 



51473. 1 : 5. 



51474. 1:4. 



51475. 1 : 3. 



51 476 A. 1:2. 



51 476 B, 51477. 1:2. 



51.1 7.'5. Large Reading Microscope, on stand with levelling screws, with 3 oculars, Figure 



The microscope can be raised and lowered, rotated and moved by means of fine adjustment < 

 The measuring graduations within the limits of about 20 mm are effected by a horizontal and vertical 

 motion. The objective is illuminated by a glass plate inclined at an angle of 45. 



51,474. Reading Microscope, Figure, with extension and rack work for adjusting at 

 heights of from .34(1 to 550 mm, draw tube and prism are graduated; vernier residing 

 t<> ' , mm; rotary in horizontal plane; with level, double objective for the 3 widths 

 of objective 50, 90 and 480 mm, eyepiece and micrometer eyepiece 6. 0. 



s. (1. 

 19. 0. 



5l.l 75. Reading Microscope for Thermometer Degrees, as suggested by Nansen, Figure 



The microscope holder has a sprint; damping arrangement for fixinj; thermometers of various 

 thicknesses. The microscope has a micrometer eyepiece and a magnification of x 12. 



:?. o. o 



cl. 1:11. 4:. 

 i::i, IX,, 



