Here is a scaled confirmation of the dimension of the Electrical Grounding Plate
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argument 344:251
ratio 1.3705
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D9 <val> OD CH
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argument 1.3705:1::D9<val>OD CH:<val>
ratio 4.013
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passes fuzzy matrix rnd 0.01
cl= .99
passes matrix sieve
3 cross links
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This is intrepreted as using the value of the outside diameter of the Demonstration Unit cell housing as reported by Dynodon, the diameter of the EGP is 4.00
inches