Ehrlund ACOUSTIC PICKUP + PREAMPLIFIER Manual page 7

The adhesive needs to be shaped into small balls about 3-4 mm in dia-
meter and attached to the corners of the pickup. Never attach adhesive
to the middle of the pickup. Then stick the pickup down carefully on the
instrument so that there is about 2 mm of space between the pickup
and the instrument.
The adhesive used to attach the pickup is sometimes queried.
However, violinists who have been using the pickup for many years say
that they cannot see any marks on their instruments. Use only the white
adhesive that is supplied with the pickup. Other types of grey or green
adhesive may leave marks. The recommended adhesive is Faber-Castell
TACK-IT White, art. no. 18 70 91-60.
The adhesive needs to be shaped into small balls about 3-4 mm in diameter and attached
to the corners of the pickup. Important: Never attach adhesive to the middle of the pickup.
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