BEA ss 
RECORD | FACE ON 
NAA AAA AAA 
1'4LBS. STANDARD T.N.T. 
tes. STANDARD TN.T. 
SINGLE PLY GAUGE 
Ye"Dia.x VYa“THICK. 
2 DIAS ATES, 
FACE ON 
VA A 
1Y4LBS. STANDARD TN. 
SINGLE PLY GAUGE 
1 u 1 7] 
JW Ye"DiA. x VB THICK. 
RECORD 4 EDGE ON 
wvaow W 
We H.-F RESPONSE OF 
AMPLIFIER REDUCED FROM 
SSO Ke/S. TO BOO KC. 
RECORD G ; FACE ON 
AL CI NANA oe RESPONSE OF 
oo 
AMPLIFIER REDUCED FROM 
SEES REDUCED FRO! 
SSOKYS TO 20 Ke/s. 
SINTERED OUTER SILVER ELECTRODES 0-002S5“THICK 
a : 
INSULATION? RUBBEROID WAx AT BASE OF GAUG 
WITH 4 VERY THIN LAYERS FROM DIPPING IN NATURAL 
LATEX AND CURING AT LOW TEMPERATURE. 
ee Ee RARE 
823 
