UPDATE:
The inventor of the Horst Miracle Probes now has
an even better invention!
This new improved product is the ultimate in detailed measurement, and will measure 3 or 4 tanks up to 1/8" accuracy. It's maintenance-free and is easier to install.
Please go to this new website to learn more about the
NEW Horst Miracle Gauge:
https://horstmiraclegauge.com
(This website will still remain available for those who still want information on the Horst Miracle Probes.)