Each length incurs a tradeoff of probe
reach vs. probe rigidity. A longer probe is
obviously better for inspecting distant
objects. But when uncoiled to its
maximum length of 24 in., the probe
sags from its own weight, preventing it
from being extended horizontally. If the
12.5 in. length is sufficient to reach most
of your inspection targets, select that
shorter length; at 12.5 in., the probe is
light enough at 12.5 in. long to be
extended horizontally.
Whichever probe length you choose,
before you can use the unit you must
re-coil the unextended section of probe
within the channel inside the clamshell
and then squeeze the clamshell shut. To
protect the internals of the unit from
being damaged by a fall, an electrical
interlock prevents The PalmScope from
being powered on with the clamshell
open.
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