The Philips MA lanterns were designed against BS1788 (a British Standard which describes how lanterns should be constructed and has led to dull uniformity of design)I thought I'd just highlight this point, as it is worth bringing out again. There is an incredibly dull uniformity of how the basic components of modern lanterns are constructed... whether it be an Urbis ZX, Holophane QS, Phillips Iridium, or whatever, there is a pretty much identical lamp section in each lantern: A metal box with reflective insides (each lantern being slightly different as to how the reflectors are angled/machined), lamp in the middle, flat bottom. Simple as that, and it does quite restrict the designs of the lanterns themselves. It's only the shrinking lamp sizes that are pulling some lanterns down to a more bag-friendly size, as opposed to the lumbering lanterns the preceed them (The WRTL Arc and standard small sized Iridium are massive compared to the mercury and SOX lanterns they replace).