This Sinar unit was found at an estate sale and quite honestly we do not quite know what it is. Based on a 4x5, it seems to have very precise measuring capabilities and an exacting imaging use of some sort. No bellows or second standard so we are stumped. 

It can use a bit of cleaning but appears intact and undamaged.

If you know what it is, great! Make an offer or enlighten us maybe?

Thanks!

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