Amazon.com : Camera Level Hot Shoe Level Hot Shoe Bubble Cover w/Standard Shoe Mount Compatible with Sony A6000 A6300 Nikon Panasonic [Combo Pack -2 Axis and 1 Axis] : Electronics
FOCUS Camera Flash Hot Shoe Spirit Level Double 2 Axis Bubble 價錢、規格及用家意見- 香港格價網Price.com.hk
Kaiser 2 Axis Flash Hot Shoe Bubble Level 206385 B&H Photo Video
Fotodiox 3x Double-Axis Bubble Spirit Levels, Set of Three Hot Shoe In – Fotodiox, Inc. USA
Hot shoe bubble level: Sony Alpha / NEX E-mount (APS-C) Talk Forum: Digital Photography Review