assembly 12 is moveable between a locked position and an unlocked position where the cover 10 can be moved to provide access to the opening in the frame such that equipment in the water meter pit is accessible for data download or maintenance fig2 is a bottom perspective view of the cover 10 of fig1 the cover 10 includes a plurality of ribs 14 formed within a bottom surface 16 the ribs 14 provide a more robust cover without significantly increasing the weight in the example shown a circular wall portion 14 a extends outwardly from a center location on the bottom surface 16 the ribs 14 extend radially outwardly from the circular wall portion 14 a to an outer periphery circular wall portion 14 b the outer periphery circular wall portion 14 b includes an inwardly curved portion 14 c that surrounds a portion of the latch assembly 12 that faces toward a center of the cover 10 the bottom surface 16 also includes a plurality of mounting bosses 18 that mount to brackets within the meter pit fig3 is a cut away view of the latch assembly 12 of fig1 this view shows the latch assembly 12 in a locked position the cover 10 in this example sits within a frame 20 in a flush mount configuration a portion of the latch assembly 12 has been rotated into abutting engagement with an inner peripheral surface of the frame 20 to achieve the locked position fig4 is a cut away view of the cover 10 on a cast iron frame 20 a fig5 is a cut.