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         Overall closed size of 5'"x 6"x 1".  Not to exceed 6" x 6"x 1.5".  | 
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          Not more than two 
         control buttons on each side.  An On/Off/Re-zero button and a Unit 
         button for switching units Carat/ Gram/ Pennyweight etc.  | 
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         An attempt to design the controls as to be so obvious that we won't 
         need writing or symbols to explain what the buttons do.  | 
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         Dual set of control buttons.  A set of buttons on each side of the 
         scale to accommodate two users. Or alternatively a single "units" 
         button which is accessible to both sides.  | 
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         Designed for engineering plastics.  | 
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         Be self contained, durable, and portable  | 
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         To accommodate six AA batteries with easy access for changing and with 
         obvious correct orientation.  | 
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         Dual displays. One to face seller and one to face buyer.  I think 
         there should be an option for deactivating one display if someone wants 
         to.  | 
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         A pan large enough to accommodate 500 carats of gemstones or 100 grams 
         of gold or silver.  | 
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         A pan with a low enough profile to keep the unit compact when closed. 
         Inverting the pan to achieve compactness is an option.  | 
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         A pan not to exceed a diameter of 4".  | 
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         An ambidextrous easy to pour and handle pan design.  | 
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         Provides a draft shield to protect the readings from interfering   
         breezes and drafts  | 
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         The closed draft shield provides a cover for transporting.   | 
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         The draft shield should also have a position where it is out of the way 
         of both users when the draft shield is not required.  Easy 
         detachment is an option.  | 
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         Hold and secure without rattling when closed an easily accessible 100 
         gram weight.  |