What's this?
telescopic crane
What's this?
block
What's this?
counterweight
What's this?
lift
What's this?
rack
What's this?
gear
What's this?
plate
What can the telescopic crane do?
It can lift heavy things.
What main parts does it have?
stable truck, extendable boom and counterweight.
What do people use it for?
People use it to build high buildings like towers, houses and school.
