Luneta’s 3D Oil Sight Glass (BullsEye) offers enhanced clarity and durability, eliminating the issues of leaks, cracks, and hard-to-read views typical of older oil sight glasses. It provides a clear view of oil levels and quality, acting as a small window into machinery for real-time monitoring of potential issues. The BullsEye sight glass is threaded into a port, where the oil level should be maintained halfway up the sight glass during operation.