Intermec CV41 Reference Manual page 5

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3 If you are attaching a flat base to the vehicle, drill and tap
holes to a surface on the vehicle and secure the flat base using
your own mounting hardware.
(x4)
If you are attaching a mounting clamp base to the vehicle,
attach the upper and lower clamp to a beam and secure the
clamp base using the screws and nuts provided to a torque
value of 0.95 - 1.10 N/m (17-20 in/lb). For large beams, you
may need to supply your own hardware.
(x2)
CV41 Vehicle Mounting Kit Reference Guide 5