a occhio e croce

Literally, “at eye and cross”.

a occhio e croce

1. about, approximately, more or less, at a guess

   Synonyms: all'incirca, circa, approssimativamente, più o meno

   • 2019, George Orwell, translated by Nicola Gardini, Nineteen Eighty-Four, Mondadori:

     A occhio e croce l'avrebbe detto il corpo di un sessantenne affetto da un male inguaribile.

     At a guess he would have said that it was the body of a man of sixty, suffering from some malignant disease.

     (literally, “At a guess he would have said it was the body of a sixty-year-old affected by an incurable disease.”)