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4.86 out of 5
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  • 06/04/2019

    Was curious how this device works. It has a grid of temperature sensitive dots made with liquid crystal. Each vertical column of dots responds to a fixed temperature. Placing the device on a tank causes the liquid crystal columns to show the temperature of the tank at various heights. An unused tank will be at uniform temperature, so a single vertical column will display. A used tank will have an upper section that is at a lower temperature than the lower section due to the boiling liquid fuel in the bottom section of the tank. Thus the device will show two half columns, one above the liquid, indicating where the liquid to gas transition is, and hence the amount of fuel remaining in the tank. Magic.

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  • 22/06/2019

    excelente producto

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  • 08/02/2021

    All right, thank you. It came very quickly.

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  • 12/01/2021

    Perfect as described arrived in 16 days in Italy all ok, only to try if they do their work on LPG cylinders at home. Super reliable seller and Recommended and Perfect thanks a lot...

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  • 29/11/2019

    ótimo

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  • 01/04/2019

    O artigo chegou conforme o indicado. Mais tarde será testado

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  • 19/03/2019

    Good quality for the item price

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  • 21/10/2021

    Very good

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  • 17/09/2021

    Not checked if it works.

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  • 29/06/2021

    great size, simple to use without the mucking around like some others (eg : no need to pour hot water on the tank, no batteries to replace, etc etc). just slap it on the tank and its good to go!

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