Patent ID: 7861416

Claim:
A firewood cutting gauge comprises an elongated rod, a disc and a removably secured failsafe means for attachment to a remote end of a chain saw cutting bar, said disc affixed to one end of said elongated rod and said means for attachment affixed to an opposite attaching end of said elongated rod, said means for attachment comprising an encased powerful permanent magnet, a locking stud, a lock washer, a nut and a fastener, said locking stud secured in a threaded bore in said attaching end of said elongated rod, said magnet of said means for attachment affixed to said attaching end of said elongated rod with said lock washer bearing against said magnet and with said nut threaded upon said locking stud, said locking stud extending through a hole disposed through said remote end of said cutting bar and wherein said means for attachment is secured in a failsafe manner to either side of said chain saw cutting bar with said fastener extending through a bore disposed in said locking stud and transverse to a longitudinal axis of said locking stud.