Johnson 1718-4800 Aluminum Magnetic Box Levels, 48" Wire / Cable Subsurface consistency to verify that

Subsurface consistency to verify that there are no air voids larger than 1/16" below the gelcoat surface

Adjustable air dampers in the lid and bottom bowl help you control the temperature

Catch Pan Included : No

won't break down when exposed to outdoor elements

Its unique thermal qualities can decrease heating and air conditioning costs

Johnson 1718-4800 Aluminum Magnetic Box Levels, 48" Wire / Cable Subsurface consistency to verify thatHighlights: Size : 48" Aluminum Heavy Duty Magnetic Domed level vial offers 320 Degree visibility Large comfortable rubberized hand grips Reinforced aerospace aluminum allow frame Patented Glo View recharges the vial surrounds from light sources for easy read in low light