Gas burner jet question.

[Neil Robinson]

Yesterday, for the first time in nine years, the jet in my avatar loco was partially blocked. When cleaning it I decided to make a note of the number for future reference. The marking is clear enough but I can't tell if it's a number 6 or number 9.
I think the maker (not Roundhouse) is still in business so an email to them may give me the answer but I've posed the question here as others may have a similar problem in the future. Is there a standard way up to stamp the numbers or are only even numbers used?

 

[bobg]

I don't have a definitive answer for you Neil, but I do know that with 'type' stamps it is sometimes possible to tell a 6 from a 9 by the shape of the 'tail'. Another way of identifying it is a full stop after it, or a line under. It could be very feint.

 

[Zman]

Trying to remember back twenty years (!), the number was always read with the output end of the jet facing up, threaded end down.

 

[brianthesnail96]

I reckon it's a number 6, based on this link:

http://www.chuffed2bits.com/page32a.html < Link To Chuffed 2 Bits

Just a guesstimate though!

 

[Neil Robinson]

Thanks folks, a quick phone call to Finescale, once I'd found the original invoice with details of the order, revealed that it is indeed a number 6 as suggested by Brian in the link to Chuffed to Bits. Interestingly that link suggests that Roundhouse may be the same but the spare Roundhouse jet I bought on a whim some time ago has a much smaller hole and is marked as a number 20.