Mente et manu is the motto of among other organisations Queensferry High School in the little town of South Queensferry on the South bank of the Firth of Forth. You can take your pick whether to translate it as "by mind and hand" or "with mind and hand", for both prepositions translate the ablative case.
mens, mentis 3rd declension f mind
manus, manus 4th declension f hand
