| 摘要 |
An improved carton cutter (10) has an incrementally extendable fully retractable first cutting blade (26) with a depressible safety guard (76) at its front end (14). A strap cutting second blade (26) is fixed at a hooked rear end (106) of the cutter (10). A ratchet mechanism (54) provides audible evidence of the amount of blade extension and a pointer (66) shows a position of the front blade (26). The front blade (26) is mounted on a lockable slide (20). Both blades (26) are easily removable without disassembly and precisely positioned without noticeable play.
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