No, however most bunded tanks are pre-supplied with an electronic oil tank gauge, which removes the requirement for a sight-gauge to be fitted.

Technically, sight-gauges can still be fitted to a single skin oil tank – subject to prevailing statutory requirements. However, it should be noted that a sight-gauge is a potential leak point and is probably not recommended.

Site gauge
This is a transparent tube through which the operator of a tank or boiler can observe the level of liquid contained within.

Electronic/smart gauge
A smart gauge which allows you to monitor the volume of fuel remaining inside your tank from the warmth of your home. Some models also allow you to measure heating oil consumption, energy costs, air temperature and carbon emissions.