piiru

Substantiivi

1. wood that has been sawed to be equally thick and wide, point unit of angle equal to 1/32 of full circle or 11.25 degrees, feast, roughly between 100–175 mm

   kulman yksikkö, merenkulussa 1/32 ympyrästä, tykistössä 1/6000 ympyrää

2. angular mil, mil unit of angle equal to 1/6000 of a full circle, in other countries may also be equal to 1/6300 or 1/6400 of a full circle

   poikkileikkaukseltaan pyöreä rakenteiden tukipuu

   “kattopiirut”

3. mark indication or sign used for reference or measurement
4. inch unspecified but very short distance