| 摘要 |
<p>The multi-blade screwdriver, esp. for gas fuelled lighters and similar small devices, is made from a sheet of pref+ steel; flat or flanged. It is roughly circular ring shaped, with projections (3, 4) outwards formed into a variety of screwdriver blades. There may be more than one internal opening (5) which may be hexagonal. The whole screwdriver may be sized/shaped to fit inside the recessed top of a refuelling canister; alternatively it may be made suitable for wearing on a keyring.</p> |
