Cammenga PRECISION LENSATIC Instructional Booklet page 15

The CAMMENGA LENSATIC COMPASS uses induction
damping to slow the rotation of the magnet. Induction
damping allows the Dial to seek Magnetic North and come to
a complete rest in much less time than a unit without
induction damping. It is a velocity dependent force; that is, as
the speed of the oscillation of the Dial comes to rest, the
damping force is zero. Induction damping proves to be far
superior to liquid damped compasses which are subject to
leakage and eventual failure.
The CAMMENGA LENSATIC COMPASS features:
• A Dial balanced on a precision made synthetic sapphire
jeweled bearing.
• Induction damping by means of a copper damping shell so
that Dial comes to rest within six seconds.
• A rubber cup sealing the copper damping shell, making the
compass waterproof.
• Operational temperature ranges from -50 degrees F. to
+160 degrees F.
For more information on the
CAMMENGA LENSATIC COMPASS,
and other products offered by
CAMMENGA, please visit
www.cammenga.com
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