Hydraulic oil level indicator is a device used to measure and display the level of hydraulic oil in a system or reservoir. It provides a visual indication of the oil level, allowing operators to monitor and maintain the appropriate oil levels for optimal system performance. The indicator typically consists of a transparent or translucent tube or sight glass that is attached to the reservoir. As the oil level rises or falls, it is reflected in the tube, enabling users to easily determine if the oil level is too low or too high. This information is crucial for ensuring proper lubrication, cooling, and operation of hydraulic systems, as inadequate oil levels can lead to equipment damage or failure