Keywords: 3inchGunModel1902Plan.jpg Plan of US 3 inch Field Gun Model of 1902 Figure 4 Page 8 in Notes on the 3 inch gun materiel and field artillery equipment Compiled for the Reserve Officers' Training Corps of Yale University <br>http //www archive org/details/noteson3inchgunm00grubrich ~ 1917 Lt-Col E L Gruber United States Army Published by New Haven Print Co US Copyright expired pre-1923 By US Government employee - no copyright PD-USGov PD-US 3 inch Gun Model 1902-1904-1905 Artillery drawings |