Buy from Amazon.com : http://fave.co/1DGWOiU
Emgreat? Panoramic Panorama Panning Base Head Tripod Clam QR Plate for Camera Tripod
Product Description :
The Panoramic Panning Clamp allows you to properly stitch a set of panoramic images and produce a super-sized panorama or VR movie with a completely level horizon line
Aircraft-Grade All-Metal Construction
Load Capacity up to 12KG
With a high-contrast bubble level built right in
The scale for horizontal rotation has 0-360 laser-engraved index marks in increments of 5