Meccano 16211 - Helicopter Assembly - Steps 2-3; Frame Extension and Component Attachment

2
x1
x1
x4
x4
S1
5 8 mm
,,
15/64
,
S1
3
x1
x1
x1
x1
x2
x1
S1
5 8 mm
,,
15/64
,
A338x1
x1
B1
14 7 mm
,,
37/64
,
A338
B1
S1
B1
5