Wrong Mark,

I've have one! Used it for years.. There is a hole you can cover with
you finger to change the range. I wouldn't be without mine,

AND; "I"ll Drink to THAT!"

Ole Thom
P/S If I remember correctly, I think I paid under 5 bucks. Can't
remember for sure that was over forty years ago and three boats ago. So
I would say it's a good buy at $12.00