Stretcher
device · 1000 BC · Ancient world
A means of carrying the wounded.
What it is made of
- Stretcher poles — has part. Two lengthwise handles.
- Canvas stretcher bed — has part. Cloth between the poles.
- Stretcher spreader bars — has part. They keep the canvas taut.
Principles and materials it uses
- Lever — uses. Two poles — levers for carrying.
- Wood — is made of. A stretcher is two poles.
- Linen — is made of. With cloth stretched between them.
Where it is used
- Ambulance — is part of. A stretcher.