Belgian SABCA Cobelda ballistic computer with bottom cover plate removed
TACOM
1971
<a rel="nofollow" class="external text" href="https://babel.hathitrust.org/cgi/imgsrv/download/pdf?id=osu.32435059134981;orient=0;size=100;seq=422;attachment=0"><i>Armor</i></a>, January-February 1971, Vol. 80, Page 30