Hi, this mout for camera is 1/4 screw mount and for the legs is 3/8 screw mount. 

I would say yes with confidence. I've had 10+ tripods, 6-7 cameras, 6-7 bino's and 3 spotting scopes over the last 30 years. Everyone one of them use the same screw size. I don't know the size and I've never asked. They have always fit for me. Seems pretty standard to me 

it could work with hunting optics as long as the hunting optics have a 1/4 screw mount. 

Yes it is. 

FD-EOS fit for Canon FD mount lens and canon EF mount camera body. canon 60d is EF mount, so the adapter ring can work with your camera, but you need to check your lens mount. could you pls let us know your lens specific model? service(AT)kentfaith(DO NOT)com, Please note: It is not same between Canon FD mount and EF mount, this adapter ring is only for Canon FD mount lens, please contact us if you want to purchase for Canon EF mount lens.