Phil Winkler wrote:TAGCaver, I have an old Fisma modified so it is submersible.... The lamp is a Petzl. Phil
I think there's a bit of confusion going on here. Fisma was for a very long time the best, and basically the only, big carbide lamp available on the market. It was an independent company, based in Spain if I'm correct.
I think to remember it was bought by Petzl like a decade ago or so and then, a few years later, closed.
The present MTDE it may be the old Fisma company, ressurected under a new name (guess the Fisma name is now owned by Petzl): surely Fisma and MTDE are very similar.
Interesting mods anyway Phil: btw, the very same one Petzl introduced with its Ariane generator. Also, if your Fisma is a 30+ yo it's a very solid model. More recent ones had problems with the connection between lower and upper chamber giving way... And $ 25 are a real bargain