Tomhas Measurement #2296 doimhneas fir1 ga gu doimhnis doimhneacht bain3 ga gu doimhneachta, iol doimhneachtaí depth s en Agus ar gach orlach nó cuid d'orlach thar dhá orlach ar doimhneacht. And for every inch or part of an inch over two inches in depth.