DO IT YOURSELF HARD CASE PLANS FOR EXTENDABLE LEVELS
Soft Cases are available from Plumb-It...
Or you can build your own hard case using these instructions
To cushion inside of case with felt (available at most fabric stores),
cut felt to 7-3/4 X dim. A + 2
Before assembly fasten felt to ply-wood with 3M-77 spray adhesive (also at fabric stores).
Cut ends long enough to fold back onto opening ends sides.
Glue and nail, staple or screw, plywood to 1 x edge pieces.