MT-55
...that the Soviet MT-55 bridge layer tanks were modified by the Czechoslovakians using their gap measuring mechanism and infrared equipment and renamed as the MT-55A?
...that the Soviet <b id="mwDOI"><a href="./MT-55" id="mwDOM" rel="mw:WikiLink" title="MT-55">MT-55</a></b> <a class="mw-redirect" href="./Bridge_layer_tanks" id="mwDOQ" rel="mw:WikiLink" title="Bridge layer tanks">bridge layer tanks</a> were  modified by the Czechoslovakians using their gap measuring mechanism and infrared equipment and renamed as the MT-55A?