Are you really just posting hard to find night vison information for free?

YEAH BRUH
Seriously, if I cant find an answer on the internet, and I figure it out it, then Im going to post it here for google to pick up.
And yes, I do pay real money to maintain this page, consider buying something but it isn’t necessary, information was meant to be free.

Can I send you info I want added here?

Yes, please do. I would be happy to add more here, as it is a work in progress, with things that pop into my polished smooth brain at this specific moment.

What size replacement oring is used on the pvs14 objective lens?

Ive used these with great success.
O-Ring: 26 mm Nominal Inside Dia., 30 mm Nominal x 2mm wide
grainger item number 41KW21
Link: Grainger part number 41KW21

Why does my PVS7 have double vision in one eye but no the other?

Check the inside lenses for scratches. One good scratch will produce double vision in one eye. And yeah, the lens is internal, and this shouldnt happen, but Ive seen it.

What size screw does my PVS14 housing use?

The correct screw size to hold the pvs-14 battery compartment to the house (4 screws) is a 2#-56 x 1/4" Hex Socket Head

What size screw and washer does the PVS7 use?

All of the screws in the PVS7 (8 in the rear, two for the collimator) are #2-56 5/16in. Additionally, the collimator uses two No.2 flat washers

What size screw does the PVS15 and PVS18 purge screw use?

The purge screw is a #8-32 1/4in and an oring

What size is the 1431 inifinty stop grub screw?

The locking screw for the infinity stop ring on the 1431 is a metric M2, about 3mm long, but you can buy a longer one and cut to size

What lenses fit on a PVS15 or PVS18?

For the ocular lens, all Envis, PVS5, Litton m944 and some other commercial sizes will fit.
For the objective, youre going to want an original, all Litton 944 objectives will fit, and SOME few envis lenses will also fit.

What size is the pvs15 objective infinity stop screw?

For the PVS15 objective lens, the infinity stop is held in place by three infinity stop screws, 4#-40 x 1/8inch Hex grub screws