58 



PRACTICE 28 



Use eye-piece and stage micrometers. Place both micrometers 

 in position and determine the number of divisions or spaces of the 

 eye-piece micrometer that correspond tol, .1, .01 and .001 millimeters 

 of the stage micrometer for each of the objectives. 



By means of this table and the microscope with the eye-piece 

 micrometer, it may be determined whether the separations are prop- 

 erly made in the following Practice. 



