The 3-D BullsEye allows immediate and accurate visual oil level monitoring from virtually any angle. Engineered to outperform and outlast traditional viewports, the inherently strong material provides excellent impact, chemical and UV resistance.
To prove the 3-D BullsEye is hard, strong, and tough we tried to destroy it, and failed. See the results.
Put one to the test on your machinery. Learn more at http://www.descase.com/visual-oil-analysis/3d-bullseye.