ab.1.5. Spiral Groove Nylon Follower Replacement
In several instances, the small tip on the nylon follower that rides in the spiral groove of
the circular dial may have been damaged. When this occurs, the follower mechanism
and slide rule dial no longer function.
It is possible to fashion a replacement
using a threaded nylon standoff
insulator designed for mounting printed
circuit boards. In this example, the
nylon standoff was part of an
assortment that was purchased via
ebay (M2 Nylon Screw White Hex Nut
PCB Standoff Assortment Kit 140Pcs).
The smallest of the standoffs (M2 x
5mm) was a good match for the size of
the original nylon follower and was
used to fashion a replacement.
The diameter of the threaded portion of
the standoff was too large to fit into the
spiral groove and was reduced by putting the standoff in a drill and using a small file, or
sandpaper, to reduce the diameter of the threaded portion enough so it would fit
comfortably in the spiral groove of the circular dial. A wire cutter was used to snip off a
small portion of the (now reduced) threaded portion of the standoff to obtain the desired
length.
The original nylon follower was removed and replaced with the modified standoff using
the screw provided in the kit.
Servicing Procedures Page 75
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