SL series 2-in-1 Spirit Level Hot Shoe Protector is mountable and efficient design centering the bubble within a circle over your hot shoe. You can easily see whether the bubble is centered, and this level takes up much less space than a large acrylic block!
Slides into your hot shoe, remains unobtrusive
Innovative circular design takes up less space than blocky 2-axis or 3-axis level
Rubberized surface for better handling
Easier to read than see through level
Slender design takes up very little space - highly portable and efficient
Compatibility
SL-1: Fits CANON EOS camera that have flash build-in sensor
SL-2: Fits SONY, MINOLTA camera hot shoe
SL-3: Fits NIKON, OLYMPUS, PENTAX, SAMSUNG, etc