Meter TA knob preparation

April 20, 2004 on R3X Course

From a post to the Free Zone America Board:
Posted on Tuesday, April 20, 2004 - 09:42 pm:

Making a disk for the Clarity Meter

I've been using a clear plastic disk with my Clarity meter for a long time. It helps me to make use of the higher bands of the sensitivity setting with far better control of the needle than otherwise.

Making it is really simple. One goes to a grocery store bakery section and picks up some baked goods in a plastic container with a flat clear plastic surface at least 5 inches in diameter.

Remove the tone arm knob by unscrewing with small screwdriver.

Mark a circle on the plastic with a pointy magic marker (preferably the erasable kind). This can be done by tracing around something circular like a masking tape roll or a magnifying glass. Mine is 4" in diameter and extends beneath the bottom of the meter by a bit over a half inch. Then find the exact center of the disk area and punch a hole in the middle with a sharp instrument like an awl and cut out a hole the size of the knob the tone arm rests on with a knife or razor blade. Dead center can also be found by tracing the circle using a compass.

Then double-side tape the tone arm to the disk, and replace the tone arm with disk onto the meter.

Next, enjoy your croissants (or whatever) while testing out your new tone arm disk. :-)

Robert D.