Adjustable binocular smartphone adapter

Adjustable binocular holder for smartphone.

This is first design I made, should work for a large range of smartphone's size.

Some metal hardware are required, I design the frame considering hexagonal head screws but I found out they can be not common items. You can find some kits online or you can simple use other type of M3 screws and glue them in place.

Some plastic parts also need to be glued, my suggestion is super glue.

Required hardware:

4 x M3 nuts
1 x M3x40 hexagon head screw
1 x M3x16 hexagon head screw
2 x M3x10 hexagon head screw