The current Auto Arm (which could alternatively be called a Small Auto Arm) can only move tier 1 items. Having discovered that they can be used to continuously load Research Chambers with Research Samples, I think that at some point in the future we should be able to get a larger, Medium Auto Arm that can move tier 2 items like Artefacts, for the same purpose.
The item would be built with the Medium Fabricator and would take up a single tier 3 slot, like the one on a Large Platform A. The area that it would grab tier 2 items from would also be larger, to accommodate the larger sized tier 2 items.