Elcometer Protovale 331 Operating Instructions Manual page 63

R
S
EARCH HEADS
Figure 28. Scanning a borehole
17.1 Search head extension arm
This optional accessory allows the operator simple access
to areas normally requiring ladders or scaffolding. The
search head extension arm reduces the need to kneel
down and allows the user to scan bridge decks and floor
areas from a standing postion.
The extension arm is suitable for use with the standard and
narrow pitch search heads. See "Accessories" on page 65
for ordering information.
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