Newton Ring Sights in the late 80's

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Old camera flyers, a couple of questions; Weren't military surplus ring sites pretty common in the late 80's? And were they not considered better (glass, scratch resistant and generally more durable) than the commercially made newton ring sites back then?

I bought a ring sight from a reputable skydiving vendor in the late 80's and tend to recall that it was military surplus and that was preferable. Am I right in that military was worth it for just a marginal price increase back then?

Are military surplus units still around now and how do they compare in today's market? I can't imagine they'd be inferior, but are they?

I'm ready to practically give it away to a friend and not looking to make a buck, so mostly I ask because I'm just curious and testing my fragile egg-shell memory.

TIA.

Ted
D6691 SCR 3975 SCS 2242 NSCR 698
On the road to wrack and ruin…………
but making damn good time.

[DSE 3]

they're quite hard to find, and always appreciated when they are.
They are a "better" view, no doubt. I've got a couple, but don't jump them