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Three-Slot Device


Technical Details

Ed Sira gave me this device at the 1991 Old Timers Reunion.

The Mystery origin 3-slot device is a forged steel device that is 498 mm. long, 99 mm. wide, 7 mm. high, and weighs 115 g. It has three slots that are each 34 mm. long.

There are no markings on this device.


I have no idea who made it, but it appears to have been made as a belay device. It has two parallel slots for twin rope belay, and a third slot for single rope. All slots are the same size. Whichever end is not in use makes a reasonable handle to hold on to. The device is steel so it will wear well, but it tends to get hot.