Vent sizing tool

[Robert Tyrrell]

I've seen these things used by others to gauge the size of an existing free air vent and I wondered if any of you know where I could get one as I can't find them on the net?
As far as I can remember, it looks like a piece of stepped rod with each 'step' being a different diameter in mm.

 

[GrahamM]

Got mine with my time with SG. Never actually seen it for sale anywhere.
Used to use 5-10mm drill bits before.

 

[Robert Tyrrell]

Used to use 5-10mm drill bits before.

Ha ha, I didn't even think of using the drill bits. I'd still like one for the tool kit though

 

[Atouchofgas]

Quick google check
http://www.transtools.co.uk/hand-to...ing/monument-2580u-vent-sizing-gauge-5mm-10mm

 

[Rckape]

I think I got mine on Amazon.

 

[mountainman]

Quick google check
http://www.transtools.co.uk/hand-to...ing/monument-2580u-vent-sizing-gauge-5mm-10mm

That's where I got mine [emoji4]