I don't understand your question. Which two models are you talking about? There have been several different variations of the 1200 and three...
With that filler cap, I would say 70s.
And pre 1931 as well.
There are screw holes in the bracket. The later frames had a circular disc where it attached to the wall. Here is a photo from an old auction...
Congrtulations on two very nice lamps. Just a small correction, the Optimus is model 255.
The Primus 1550 was actually made by Optimus and is identical to the Optimus 1550 (apart from the name :) ). The link Matti put up is a good start.
Just for the info, the Primus 1001 (and 1050, 1051) glass is 135mm diameter and 132mm high. Primus originally listed the glass as 135 x 135, but a...
When not in use, always have the pressure release screw open. The needle is supposed to be completely free of the jet when working. I have not...
Hi Benio and welcome to the forum. The 1020 is extinguished by releasing pressure. The needle is only for clearing the jet, not for making a...
It is just a rebadged Austramax, so the only difference is the colour of the hood.
Yes, meths is the right choice. Theoretically you could use petrol, but meths is much cleaner.
That's pretty much it. It just heats up a bit quicker though.
@Julian Whittaker Maybe you should start a new post about your blow torch. Just to avoid confusion. :)
0000 steel wool also works, together with some dishwashing liquid.
On the second and third pictures posted by Dda, you can see the copper rod sticking out of the tank. This was an early safety feature for petrol...
It was only when they went to the same design as the Petromax 900 that the glass size changed. This version of the Optimus 100 uses the same size...
It is standard Optimus 200 size.
I wouldn't say rare, but they are not that common. Any of the 350CP versions are nice to find as they were only produced for three years. You have...
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