Take the guesswork out of leveling a tripod-mounted, hot shoe-equipped camera - get a Manfrotto 337 Hot Shoe Double Bubble Level.
Some photos require more precise leveling than others - such as any shot with a horizon in it - and most landscape shots look best when they are taken with a perfectly level camera. Panoramic photos benefit from a level camera. I find it especially hard to level a camera in low light/night when working on a non-level surface. The Manfrotto 337 Hot Shoe Double Bubble Level solves this problem.
The Manfrotto 337 Hot Shoe Double Bubble Level is simply a solid piece of clear acrylic (?) with two bubble levels inside. Slide the double bubble level into any flash hot shoe and adjust the camera on the tripod until the level shows correct. Two mounts are provided for horizontal or vertical mounting/leveling.
Synonymous with the Bogen / Manfrotto name is good quality for a reasonable price.
I like it.