A scissor jack is a compact, mechanical lifting device primarily used to raise vehicles, like cars, for tasks such as changing a tire. It operates using a simple screw mechanism that extends or retracts two sets of crossing metal arms (resembling scissors). As the screw is turned (usually with a provided handle or wrench), the arms spread apart, creating a vertical lifting force. Its key advantages are portability, ease of storage due to its flat profile when collapsed, and straightforward manual operation. Always ensure it's placed on solid, level ground before use for safety.
Function: Lifts vehicles (e.g., for tire changes).
Mechanism: Screw-driven crossing arms ("scissor" action).
Operation: Manual (turned with handle/wrench).
Key Features: Compact, portable, simple, flat when stored.
Safety Note: Requires solid, level ground.