Coat of arms of Tulloch

The blazon

ar.) on a fesse, betw. three cross crosslets, fitchee, gu. as many mullets of the field, (another, ar.) — Crest, a mitre, gu. garnished and rimmed or, jewelled ppr.

A blazon is the description of a coat of arms in the technical language of heraldry. The drawing comes from that text, and from nothing else.