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Posted (edited)

Hello:

 

Such innovation.  I had thought of  those pull down window shads.  Then I remembered when I was in grade school (1702) there was a roll down map system like the window shads only some how there were several maps (10-20) on one roller? and all you had to do was pull down the map that was desired. Never did check into it.  

 

TJ

Edited by BubbleHead
Posted

Hello:

 

Such innovation.  I had thought of  those pull down window shads.  Then I remembered when I was in grade school (1702) there was a roll down map system like the window shads only some how there were several maps (10-20) on one roller? and all you had to do was pull down the map that was desired. Never did check into it.

I agree, Jim had a marvelous idea about those spring-loaded rolls (and other ways to store and retrieve plans). But I doubt that you had those things in your grade school at that time. After all, it was George W. Bellington who invented that and patented the idea in 1904 (I think that is about right???).

 

I was wondering about the old movie projection screen that had the same feature (and which I threw away eons ago). It would come in handy now.

Jay

 

Current build Cross Section USS Constitution  http://modelshipworld.com/index.php/topic/10120-cross-section-forward-area-of-the-uss-constitution/

Finished USS Constitution:  http://modelshipworld.com/index.php?/topic/103-uss-constitution-by-modeler12/

 

'A picture is worth a  . . . . .'      More is better . . . .

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