Arnold & Son Watch Time Pyramid 42.5 Platinum 1TPEX.W01A.C153X. Arnold & Sons conception of time is often either linear or cyclical. A vertical alignment is not part of our mental landscape. And yet, it is this vision that Arnold & Son has chosen to portray on Time Pyramid. Inspired by the creations of John Arnold and his British peers, it revives a clock shape that was fashionable in the 1830s. By arranging the movement’s organs from top to bottom instead of in a circle, Arnold & Son goes beyond the chronometric horizon to achieve an unparalleled feat of design.