What's the outside diameter of a Howard Low D tube?

Whistle
1

If someone around owns a Howard low whistle (please specify the key), could he please take out his calipers and measure the tube outside diameter?

Thanks.

2

Hi Paul,
I don’t own calipers,so I’ve used the highly scientific method of utilising a cheap plastic rule. I make the diameter of my Howard low D to be 25mm (allowing for sexy black finish). :sunglasses:

3

Thank you! I wondered if it would be metric (25.0) or one-inch (25.4 mm).

Rats, this means the Howard head won’t fit me one-inch tube… :sniffle: