Features:
1. This product can safely accurate measurement of the gas capacity, according to the temperature of the gas. Temperature range for - 10 to 120 C, can show the different colors of blue, green, brown, with green marks the right temperature, and can be recycled for a long time.
2. Place your Gas Level Indicator on a clean area on the lower half of the cylinder.
3. Turn on the gas and wait 10 minutes before you can read your Indicator.
4. In the winter the bar on the left will be active, and in the summer the bar on the right will be active.

Specification:
Color: Black;
Size: 9.8 x 6.2 x 0.1cm;
Package Size: 19.7 x 10.3cm.

Usage:
shown in the figure, directly paste the gas capacity test card on the gas canister.
2.A colored strip will appear on the card. The position at the top of the strip indicates the remaining amount of gas, followed by Full--Almost Empty--Time to Refill.
the color has reached the bottom of the test card, it means the gas has run out.
card can be used several times.

Package included:
1 x Gas Tank Level Indicator.
Product Attributes:

Weight (lbs.): 0.03 lb