Adjust the width of the jaws to fit the nut or bolt you're working with using the adjusting screw or slide mechanism.

Apply pressure while turning the spanner handle to tighten or loosen the fastener.

Apart from its standard use for tightening or loosening nuts and bolts, a small shifting spanner can be repurposed for:

1. Grip Assistance: Use it as a grip aid for opening stubborn jars or bottles by adjusting the jaws to fit the lid and using the leverage to twist it open.
2. Pipe Work: Utilize it for plumbing tasks such as tightening or loosening pipe fittings or connectors.
3. Crafting: Use it for metalworking projects where a small adjustable wrench is needed for holding or turning small components.