102 THE Abbe's 'MAN'S HANDBOOK. 



The . cxbtf ir.ver insert? the fingers of his left hand into the loop of 

 leather straps' attached to" the back of the hypsometer, with both 



FIG. 10. Method of sighting with standard hypsometer. 



straps inside of the hand and the instrument on the back of the 

 fingers. Closing the hand enables him to grasp the straps firmly. 



