Fence posts (wooden) and a long stake (Henleaze BS9)

2 wooden fence posts, unused.
One is 1.9 m high and 10cm x 10cm thick (4"x4")
Other is 1.8m high and 7.5cm x 7.5 cm (3"x3")

Also a stake 2.0 m long and 3.5cm x 3.5 cm (1.5" x 1.5")