1,5 turn out???

What is ment by turning an airscrew or similar for 1,5 turn??
Is one turn 180 degrees or 360??
probably a stupid question but the most simple things can ruin your day

Martijn

1,5 turns is metric for 1.5 turns. The French use the "," as the numeric terminator while the English use the "." as the numeric terminator.

A full turn (1.0 turns) or full revolution is 360 degrees, a one half turn (0.5 turns) is 180 degrees while a one quarter turn (0.25 turns) is 90 degrees.

I hope this helps. Nobody needs a ruined day! Best of success.