These are the Robart 345 Fowler Flap Hinges|
1/5 & 1/4 Scale Fowler Flap Hinges.
Set of four specialty hinges w/instructions
Fabrication of parts to mount hinges. Instructions explain how and
what you will need to make.
Length: Closed: Approx. 4 1/4"(107.95mm)
Open: Approx. 4 1/2"(114.3mm)
Width without lip: 1/8"(3.175mm)
with lip: 9/16"(14.2875mm)
Height: Closed 1"(25.4mm)
Open: Approx. 2"(50.8mm)
The directions explain what will need to be made for mounting the
hinges. They also show how they should be operating.