Undertube Sunshine Recorder ( English info in package) Also called Joe Tang style Sunshine Recorder, It is a very good educational instrument for chirdren . 1. Use Type FJ-1 cylinder sunshine meter can be used to observe the beginning time or the ending time of sunshine, and also can be used to count up duration of sunshine.
Fieldpiece SSX34 Superheat and Subcooling Meter - NEW! Most non-electrical HVACR problems are charge related. Many systems in operation are undercharged or overcharged.
By clicking "Accept All Cookies", you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts.