Sturdy Cases With Tight-Fitting Hinged Lids. Waterproof Crushproof And They Ha...Sturdy Cases With Tight-Fitting Hinged Lids. Waterproof Crushproof And They Have An Automatic Purge Valve To Protect Your Expensive Instruments From Wet And Damp. Available In Six Sizes (Lxwxd). 1020: 6 3/8 X 4 3/4 X 2 1/8 Inner: 5.31 X 3.56 X 1.68 .more