No specific info about version 4.2. Please visit the main page of Instruments on Mac Informer.
Info updated on:
This app monitors CPU usage, battery status, and many others.
This program helps you split, merge, and compress PDFs.
Software sample player for the Macintosh.
This app can design and manage, the screen layout of Flymaster instruments.
It enables the AlphaSphere to operate as a number of common devices.