FTL-60 High Precision Tripod Level Sprit Level Add-on Offset Bubble Level
• Fits for any ball head with base diameter no larger than 60mm.
• Gives an accurate spirit level reading for the base of your ball head.
• Degree marks on your ball head remain visible.
• Can accommodate any 3/8" or 1/4" tripod stud.
• Center hole is 10mm in diameter.
48mm 50mm 60mm 76mm models are available!