I think they have numbers. Will dig it out and have a look later. It's still wet and miserable in Glasgow, so van hasn't had a proper clean in months!It’s the spread. The amount is marked in degrees (it is on mine).
@Skyliner33 do you know if it's the lower or higher number for a wider spread of spray?





I never thought camping chairs could be as expensive but reviews were universally positive so I consider it an investment to have super lightweight, compact chairs that should last years. 5 year warranty and I got each chair for £20 less than the usual price. Still a lot but hopefully worthwhile.