Oil Level Measurement Size: The mechanical Fuel Gauge has a measurement size of 405mm .Oil Gauge Indicators: The gauge features clear indicators F represents full oil level, GAS indicates mid level, and E signifies that the oil level has reached the bottom. This allows for easy observing and understanding of your fuel .Working Principle: As the oil level increases or decreases, the float moves up and down accordingly, transmitting this movement to the pointer. By observing the position of the pointer, you can determine and understand your fuel storage amount.Material: The mechanical oil level gauge is made from metal and PP materials for long term use.Functionality: This Fuel Gauge provides real time observing of your oil level Using a float that moves with changes in oil levels, this mechanical gauge can intuitively and instantly display current liquid height in your container to help you understand storage amounts. Specification: Material: Metal PP Size Chart: 43cmx7.4cmx7.4cm/16.93inchx2.91inchx2.91inch Package Includes: 1 Fuel Gauge Note: Please allow slightly errors 1-2cm differences due to manual measurement.