The Head Disk and Mounting Screw from Field Optics Research threads onto the center column of F68 series tripods, and the head mounting screw has 1/4"-20 and 3/8"-16 reversible threads to accommodate a head of your choice.

For F68 Series Tripods    Threads onto Tripod's Center Column    Reversible 3/8"-16 & 1/4"-20 Head Screw

Related Questions and Answers

Q: 1. I'm interested in using one of these on an RRS TFC-34 tripod. Is the receiver unit's diameter wide enough that it would interfere with the ability of the tripod legs to raise into their most splayed locked position? What is the receiver's actual diameter where it makes contact with a tripod's apex?

A: The diameter of the base for the Arca Swiss Quick-Link Tripod Head Quick Release Set is 2.75 inches, so that may interfere with the legs on the TFC-34 are raised.

Q: 2. Can a hook be screwed to the bottom of this or should I just consider a leg bag?

A: There is no threaded hole or stud on the bottom. The grip is smooth rubbery plastic so I don't think you can hang anything securely.

Q: 3. Is it compatible with Arca type L-Plates?

A: Yes, it is compatible with Arca style plates.

Q: 4. Is this compatible with Gitzo GT3543LS tripod?

A: Yes it is

Q: 5. Can this leveling base be used on a Gitzo Series 3 Systematic tri-pod or would I require some type of adapter?

A: I doubt it would work and I've never seen an attachment that would allow the use of the ball leveler with that type of tripod. You would need a 100mm bowl tripod.

Q: 6. Can this be used with the Manfrotto 502HD Pro Video Head with Flat Base (3/8 -16 Connection) to mount on a 100mm bowl tripod? thanks

A: shouldn't be a problem. I have a 501 and a 503 and it works on those. Pretty much any flat base fluid head with a 3/8 16 female should work fine.

Q: 7. Will this work on the Manfrotto 546B tripod?

A: Yes it would work. The Manfrotto 546B is a 100mm ball tripod and it comes with a 75mm adapter for 75mm ball levelers.

Q: 8. does it come with lever clamp ?

A: Yes, a lever clamp is included with the LVL-BASE.

Q: 9. What is the height of the Quick-Link Disk in mm?

A: The Arca-Swiss Quick-Link Disk for Quick-Link Tripod Head Quick Release System is approximately 14mm high.

Q: 10. I have a Leofoto tabletop tripod, LS223C. Would this work/fit on the tripod's apex, which is only 1 5/8" in diameter?

A: The Arca-Swiss Quick-Link Tripod Head Quick Release Set is designed for larger tripods.