Abstract: A device for indicating a fluid level, having a device housing (2), which has a viewing window (4), which provides a view of a transparent indicator body (6), which can be at least partially filled with the fluid via at least one port piece (24), the cavity (26) of which is reached through by a securing part (14), which has a fluid guide (22) and which can serves to secure the device housing (2) to a third component, such as a fluid storage tank, is characterized in that the port piece (24) comprises a support structure, at least consisting of individual ribs (34, 36) interconnecting plate-shaped wall parts (30, 32) of the port piece (24), and in that the support structure encompasses the cavity (26).

Abstract: The invention relates to a device for the display and/or control of fluids, comprising at least one fluid connection (30, 32), which opens out into a riser pipe (2), which is at least partially surrounded by a frame (8), in the front wall (6) of which there is a recess (40), which releases a viewing area (4) for monitoring the fluid level in the riser pipe (2), characterised in that a cover is provided which can be mounted on the recess (40) so as to be removable and forms a protection window (42) protecting the riser pipe (2) from outside against mechanical influences in the viewing area (4).