A measuring device according to the present invention is for a vehicle arranged downstream of air blown from a blower for a wind tunnel test, the measuring device comprising: a measuring device main body configured to enable the arrangement of the vehicle and movement thereof relative to the blower; and a splitter connected to an end of the measuring device main body facing the blower side, wherein the splitter has: a main body portion having an upper surface continuous with the upper surface of the measuring device main body and a lower surface having a surface extending downward as the distance from the blower side increases; and a plate-shaped tip member extending from the tip of the main body portion toward the blower side, the upper surface of the tip member is formed to be continuous with the upper surface of the main body portion, an edge of the lower surface of the tip member on the blower side is positioned closer to the main body portion than an edge of the upper surface of the tip member on the blower side, and a tip surface connecting the edge of the upper surface and the edge of the lower surface is formed to have an arcuate cross-section.

This assembly system is for a measuring device that, for a wind tunnel test, supports a vehicle including a plurality of wheels. The assembly system includes: a plurality of measurement modules in which at least one load cell is stored; and at least one coupling module. The measuring device can be configured such that each of the measurement modules is disposed at a position corresponding to a wheel of the vehicle, by using at least one of a first coupling mode, in which the plurality of measurement modules are coupled, and a second coupling mode, in which the plurality of measurement modules are coupled via the coupling module.