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From: spoo@utcsrgv.UUCP (Suk Lee)
Newsgroups: net.audio
Subject: Re: Query: Stylus Replacement Timer
Message-ID: <4201@utcsrgv.UUCP>
Date: Tue, 8-May-84 16:38:11 EDT
Article-I.D.: utcsrgv.4201
Posted: Tue May  8 16:38:11 1984
Date-Received: Tue, 8-May-84 19:24:33 EDT
References: <223@cubsvax.UUCP>
Organization: CSRG, University of Toronto
Lines: 27

<>


Stanton used to sell a stylus timer.  It had a microswitch
that contacted the tonearm when it was in the rest position.
When the arm moved, the timer started; it stopped when the
arm was replaced.  It used a neat device--a coulomb-meter.  Basically
a capillary tube with a blob of mercury and some electrolyte with the
ends capped with electrodes.  As current passed through the tube,
mercury would be plated from one end of the elctrolyte to the other, and
so indicated the total amount of charge that had passed.  The counter
ran for approx. the life of one stylus on one silver oxide battery.
I'm not sure if it's still available, but I recall seeing one
about three years ago in Toronto.

Alternatively, you can do what I do.  I simply mark a hash on my
turntable cover with and overhead transparency pen (watersoluble!) every
time one side is played.  I've found that at around 1500 sides, (at one
gram) the sound starts getting that "edgy" feeling.  

-- 

From the pooped paws of:
Suk Lee
..!{decvax,linus,allegra,ihnp4}!utcsrgv!spoo