Apparatus and method for detecting a leak in a swimming pool

Apparatus and method for detecting a leak in a swimming pool

Apparatus for measuring small changes in liquid level in a conta

Apparatus for measuring small changes in liquid level in a conta

Apparatus for measuring the amount of liquid in a tank mounted w

Apparatus for securely mounting and continuously monitoring...

Barbecue fuel level gauge

Contents gage

Device for determining the quantity of the contents of a tank mo

Device for measuring and displaying the amount of beer in a keg

Fuel gauge assembly for LP gas tanks

Fuel gauge for propane tank

Gas grill tank scale

Gauge for monitoring the content of a propane tank

Holding and monitoring apparatus for intravenous infusion contai

Indicator of amount of liquefied gas in bottle

Liquid level indicating method and system

Liquid quantity detecting apparatus

Liquid quantity detecting device

Measurement of gas fuel amount