I bought a Lander tripod without the quick-release attachment. These are no longer available so I designed one from scratch in FreeCAD. This is the result.

I am told that this mount should fit the Lander L830, Lander T830, Pyser 510, Pyser 520 and Visionary T830.

Geeetech A20

Doesn't Matter

Doesn't Matter

Fine

60%

You will need a standard 1/4 inch camera retaining screw. I also added a thin rubber pad to prevent the camera from rotating easily.

I measured the tripod socket and reverse engineered the plate design.