822 
PieAGi Es 37. 
RECORD i} FACES ON 
RECORD @. EDGE ON 
RECORD 3 EDGE ON 
GAUGE FACE PARALLEL 
TO WATER SURFACE 
RECORD 4. EDGE ON 
GAUGE FACE. PERPENDICULAR 
T9_WATER SURFACE. 
SINGLE PLY GAUGE Ye DIA.x 4"“THICK. ; 
ANNEALED COPPER ELECTRODES O-O22“THICK. 
INSULATION: PARAFFIN WAX— VASELINE MIXTURE. 
IV4LBS. STANDARD TNT. CHARGES. 
