All gases will leak out over time. How long it remains in depends on the
type of work you do with them. Aboard aircraft, and at high altitudes they
leak faster. Drop them and they may leak. Heat them up and they may leak.
Cool them too much and they may leak. Note all the optics are in a nitrogen
atmosphere either. Send them in for service every ten years and you'll be
fine.

Gilligan
"Capt. Neal®" wrote in message
...
My Fujinon binoculars are at least fifteen years old
now and still working like new though they look a little
beat up.

Amazingly they do not fog up inside the lenses.

They are filled with "dry nitrogen" at the factory
but I find it hard to believe this inert gas has
stayed in there over all the long years.

Anybody here happen to know how long nitrogen
really remains in those filled binoculars?

CN

A sensible answer among a bunch of assumptions.

Thanks for the rare find . . .

CN


"Gilligan" wrote in message nk.net...
All gases will leak out over time. How long it remains in depends on the
type of work you do with them. Aboard aircraft, and at high altitudes they
leak faster. Drop them and they may leak. Heat them up and they may leak.
Cool them too much and they may leak. Note all the optics are in a nitrogen
atmosphere either. Send them in for service every ten years and you'll be
fine.

Gilligan
"Capt. Neal®" wrote in message
...
My Fujinon binoculars are at least fifteen years old
now and still working like new though they look a little
beat up.

Amazingly they do not fog up inside the lenses.

They are filled with "dry nitrogen" at the factory
but I find it hard to believe this inert gas has
stayed in there over all the long years.

Anybody here happen to know how long nitrogen
really remains in those filled binoculars?

CN

Gilligan wrote:

All gases will leak out over time. How long it remains in depends on the
type of work you do with them. Aboard aircraft, and at high altitudes they
leak faster. Drop them and they may leak. Heat them up and they may leak.
Cool them too much and they may leak. Note all the optics are in a nitrogen
atmosphere either. Send them in for service every ten years and you'll be
fine.


I doubt that it is even worth a service on such binoculars (given labor
coists etc). It may be just cheaper to buy new.

Cheers

Fujis cost 7-800 bucks. They are rated better than
Steiners in Practical Sailor tests.

A little maintenance cost would be cheaper than buying
new ones. Plus, they have a lifetime warranty.

Hey, man, you sure are looking small in your discourse
with LP. You should give it up. A real man should avoid
being constantly made to look silly by a woman.

CN


"Nav" wrote in message ...


Gilligan wrote:

All gases will leak out over time. How long it remains in depends on the
type of work you do with them. Aboard aircraft, and at high altitudes they
leak faster. Drop them and they may leak. Heat them up and they may leak.
Cool them too much and they may leak. Note all the optics are in a nitrogen
atmosphere either. Send them in for service every ten years and you'll be
fine.


I doubt that it is even worth a service on such binoculars (given labor
coists etc). It may be just cheaper to buy new.

Cheers

Capt. Neal® wrote:

A real man should avoid
being constantly made to look silly by a woman.


I agree. Are you going to try subtlety -or are you worried she won't
understand it?

Cheers

She apparently likes me. I can't recall her saying
humiliating things about me lately. You on the other
hand are the object of her recent pokes. Ha ha!


CN


"Nav" wrote in message ...


Capt. Neal® wrote:

A real man should avoid
being constantly made to look silly by a woman.


I agree. Are you going to try subtlety -or are you worried she won't
understand it?

Cheers

And, I can't say as I blame her. We are both
conservatives and you are a demonstrable
left-wing wacko liberal.

CN


"Capt. Neal®" wrote in message ...
She apparently likes me. I can't recall her saying
humiliating things about me lately. You on the other
hand are the object of her recent pokes. Ha ha!


CN


"Nav" wrote in message ...


Capt. Neal® wrote:

A real man should avoid
being constantly made to look silly by a woman.


I agree. Are you going to try subtlety -or are you worried she won't
understand it?

Cheers

Birds of a feather will flock. At dawn, what of importance do they say?

Cheers

Capt. Neal® wrote:

And, I can't say as I blame her. We are both
conservatives and you are a demonstrable
left-wing wacko liberal.

CN


"Capt. Neal®" wrote in message ...

She apparently likes me. I can't recall her saying
humiliating things about me lately. You on the other
hand are the object of her recent pokes. Ha ha!


CN


"Nav" wrote in message ...


Capt. Neal® wrote:


A real man should avoid
being constantly made to look silly by a woman.


I agree. Are you going to try subtlety -or are you worried she won't
understand it?

Cheers

Her affinity for panderers has been amply demonstrated, as has her
jealousy of slim women.

Cheers

Capt. Neal® wrote:

She apparently likes me. I can't recall her saying
humiliating things about me lately. You on the other
hand are the object of her recent pokes. Ha ha!

Still struggling with reading comprehension, I see.

I guess we all can't be perfect...

LP

"Nav" wrote:
Her affinity for panderers has been amply demonstrated, as has her
jealousy of slim women.

Cheers

Capt. Neal® wrote:

She apparently likes me. I can't recall her saying
humiliating things about me lately. You on the other
hand are the object of her recent pokes. Ha ha!