Highly Recommended
I work as a custodian for a public school system. The new building has a chiller system for cool air. I need to be able to monitor the glycol concentration for proper operation. The Extech RF40 comes with excellent instructions and is easy to calibrate and use. All this at what I feel is a very fair price.
A GREAT tool!!
As an RV tech, I use this tool to check the specific gravity of the house and chassis batteries on any RV that I am working on. Much more accurate than just using a DC Volt meter or hydrometer. Easy and quick to use. I can check all of the cells in just a few minutes. Highly recommended to anyone who deals with lead-acid batteries on a regular basis!
Convenience and Accuracy
Bought for use at my off-grid solar powered vacation home.
Much easier to take and record accurate specific gravity readings on my batteries. With this easy to use tool I'll be more diligent about watching out for my batteries' health.
Recommended.
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