Abstract of INFO-MAC archived encoded Mac binary file
   'dev/db/a4d/ext/timers-ext.hqx'
  Uploaded 09/17/1993   5944 bytes

From 73507.3041@CompuServe.COM Sun Jul 25 21:44:59 1993
Date: 25 Jul 93 21:38:54 EDT
From: Scott Ribe <73507.3041@CompuServe.COM>
Subject: Timers BinHex

Timers, free, uses the Time Manager to get accurate timings with a
resolution of at most a millisecond, down to 20 microseconds,
depending on your hardware.  Much more precise and accurate than
counting ticks because it doesn't get "paused" if interrupts are
disabled. Includes Think C source code.