lock is man deigned thing.l saw that there is a key hole on the back of the lock but that is the master key. But you have to pot in a three number code. The combination padlock is usually made with a metal “can” with three tumblers inside connected to a dial on the front. The mechanism is very similar to that used in safes.
this is a fire hydrant you use this for connecting fire hoses. there is a wheel on the end that you torn so it removes the bolck so the warter comes out.A fire hydrant is an active fire protection measure, and a source of water provided in most urban, suburban and rural areas with municipal water service to enable firefighters to tap into the municipal water supply to assist in extinguishing a fire.
Professional AFL goal posts like those used on the MCG are 15 m tall, with behind posts standing at 10 m, though most local football grounds don’t require posts nearly this tall.The most common types of metal AFL posts are made from are either steel or aluminium.