[Poster] Using an Industry-Ready AR HMD on a Real Maintenance Task: AR Benefits Performance on Certain Task Steps More Than Others. - Andrew Pringle; Abraham G. Campbell; Stefanie Hutka; Alberto Torrasso; Colin Couper; Fabian Strunden; Ján Bajana; Kamil Jastzab; Ralph Croly; Rob Quigley; Ross McKiernan; Paul Sweeney; et al. (ISMAR Adjunct, 2018)