651 



(a) QADOE ASSEUBLED FOB USS. 



. CiAUOE 



CLAMPING 



COPPER 



Diaphragm 



(b) GAUGE WITH ENDPLATE REMOVED, SHOWIKO PARTS. 



M I I ' I ' I ' I ' I ' I ' I ' M M M I M ' I M ' I ' I ' I ' 

 (c) DIAPHRAGM SECTIONED TO SHOW DISHING. 



FIGURE 1. 

 STANDARD 6" COPPER DIAPHRAGM GAUGE. 



N.C.R.E./N 13 



