View cart “Safe Curve Speed Indicator” has been added to your cart. Previous Product Next Product #BL Round Bubble $5.50 30mm diameter bubble. 3 hole mounting base. #BL Round Bubble quantity Add to cart SKU: #BL Categories: Bubbles/Vials Accessories, Inclinometers Description Description 30mm diameter bubble. 3 hole mounting base. Related products Add to cartBoom Angle Indicators, InclinometersModel 8010 $61.60 Add to cartDegree Models, InclinometersModel 45S $61.60 Add to cartDegree Models, InclinometersModel 15S $61.60