Root Elevators
Fig. 32F Frieman
DTC--REV--1481

Root Elevators
Fig. 2
DTC--REV--1483

Root Elevators
Fig. 2 Flohr
DTC--REV--1484

Root Elevators
Fig.3 Flohr
DTC--REV--1485

Root Elevators
Fig.8 Cryer
DTC--REV--1486