First of all, I have both the front and rear covers in metal, coming out of the original dies, so they are not reproduction. As for the rest of the parts you may need to restore your Model 90 series ECO, just go to my Ebay Stors and you will find every part you need:
http://stores.ebay.com/crspub-ECO-AIR-METERS-PRODUCTS_W0QQssPageNameZl2QQtZkm We specialize in just air meters, with a emphasis on the Model 90 Series ECO. Please look over our ebay stores, and if ther is something you can't find just let us know: jhsim@swbell.net.
We have every part you need to restore your Model 90 series air meter back to what it looked like in 1947, including many parts that are no longer available. Any question, just ask.
handy-jack
