Unfortunately I didn't purchase this off Amazon, as I could have saved a few bucks ($7.00). Having just purchased a spa/hot tub I needed the 50 amp GFCI, and adding a separate panel with GFCI was less costly than trying to get a 50 amp GFCI breaker to add to my current panel (Cutler-Hammer). The wiring was pretty simple - although using #6 wire is never easy.
Spindle nose on a lathe headstock. The small female taper is a Morse taper to take a lathe center or a tool such as a twist drill. The large male taper takes a lathe chuck, which is retained by the large nut. A machine taper is a system for securing cutting tools or toolholders in the spindle of a machine tool or power tool. A male member of conical form (that is, with a taper) fits into the female socket, which has a matching taper of equal angle.
The world continued to shrink at a great rate as new means of transport and communication speeded the pace of life.(ecology industrial Revolution). Samuel Morse's original telegraph transmitter and receiver, 1837. The original Morse telegraph did not use a key and sounder.