12 LABORATORY MANUAL OF ANTHROPOMETRY 



the upper, immovable socket. Using these two upper lengths of the 

 rod by themselves, and reversing the cross-rod in the movable socket, we 

 have a large slide-compass. 



The entire instrument is thus a double one; in one form of adjustment 

 it is an anthropometer, used for determining the exact height above the 

 ground of any given point upon a standing or sitting figure (living) , and 



FIG. 5. Anthropometer, being used for ascertaining heights from floor. 



by means of a few slight changes it becomes converted into a rod-compass, 

 (Stangenzirkel) or large form of slide compass, with 'the legs composed of 

 two long rods, which may be adjusted to varying lengths, and used for 

 nearly all of the purposes for which the more specialized forms of cranio- 

 meter, pelvimeter, and small slide compass are commonly employed. 

 Rod Compass. In adjusting the instrument to these two uses there 

 is necessary a difference in the insertion of the cross rods, as well as in 



