Electronics insert arrangement for a measuring device housing, comprising: an electronics insert; an electronics module; the electronics insert comprising a first attachment device and a first interface; the electronics module comprising a second attachment device (103, 104) and a second interface; it being possible to bring the first attachment device and the second attachment device (103, 104) into engagement in order to couple the electronics module to the electronics insert in such a way that a space between the first interface and the second interface remains constant when the electronics insert moves; the electronics insert being adapted to carry out processes of a first functionality; the electronics module being adapted to carry out processes of a second functionality; the electronics insert comprising a first plane surface; the electronics module comprising a second plane surface; characterised in that, in an operating state in which the first attachment device and the second attachment device (103, 104) are brought into engagement, the first plane surface and the second plane surface lie one to another in a planar manner; and in that, in this operating state, the first attachment device is adapted to exert pressure on the second attachment device (103, 104) towards the second plane surface so that the first plane surface and the second plane surface are pressed against one another; the electronics insert comprising a measuring device infeed, by which measuring electronics, located in the electronics insert, can be connected to a measuring device; the measuring device infeed comprising an elevation which projects from the first plane surface; the second plane surface comprising a notch in order to fit the second plane surface to the elevation. an electronics insert; an electronics module; the electronics insert comprising a first attachment device and a first interface; the electronics module comprising a second attachment device (103, 104) and a second interface; it being possible to bring the first attachment device and the second attachment device (103, 104) into engagement in order to couple the electronics module to the electronics insert in such a way that a space between the first interface and the second interface remains constant when the electronics insert moves; the electronics insert being adapted to carry out processes of a first functionality; the electronics module being adapted to carry out processes of a second functionality; the electronics insert comprising a first plane surface; the electronics module comprising a second plane surface; characterised in that, in an operating state in which the first attachment device and the second attachment device (103, 104) are brought into engagement, the first plane surface and the second plane surface lie one to another in a planar manner; and in that, in this operating state, the first attachment device is adapted to exert pressure on the second attachment device (103, 104) towards the second plane surface so that the first plane surface and the second plane surface are pressed against one another; the electronics insert comprising a measuring device infeed, by which measuring electronics, located in the electronics insert, can be connected to a measuring device; the measuring device infeed comprising an elevation which projects from the first plane surface; the second plane surface comprising a notch in order to fit the second plane surface to the elevation.