"ALUMINUM,COMPOSITION 7075,TEMPER T651,QQ-A-250/12,10.16 IN. O/A LG,6.18 IN. O/A H,4.40 IN. W BETWEEN FORK,4.44 IN. FROM TOP OF FORK TO TOP OF BASE LEFT SIDE,4.86 IN. RIGHT SIDE,3 DEGREES 21 MINUTES PLUS OR MINUS 0 DEGREE 15 MINUTE SLANT FROM RIGHT END TO LEFT END OF BASE,TWELVE 0.250 IN. DIA PIN HOLES IRREGULAR SPACED,TWO 0.531 IN. DIA HOLES"