In reply to Jamie Hageman:
> ...made by MacInnes-Peck. TMM is correct
Point taken.
However we might have been at cross purposes here: anybody active at that time would refer to that tool as a 'Terrordactyl' - full stop.
I think the confusion has arisen here on account of the additional reference to its designer/manufacturer as either 'MacInnes' or 'Macinnes-Peck.'
FWIW I used a Terror in my early days in Scottish winter climbing.