1.480 in. O/a w, 1.921 in. O/a height, 1.222 in. From center hole to center hole on bottom, 1.262 in. From center lower hole to center of top hole, 3 ea 0.035 diameter hole thru, 4-40 nc-28 thd, 1.040 in diameter of center of bracket, finish mil-c-5541, u/o aim-4/a1m-26 falcom