Abstract: A magnetic fixing unit having a first and second sub-assembly with cooperative structure for increased strength of assembly and prevention of mutual shifting between the first and the second assemblies. The magnetic fixing unit further includes a guide structure on one of the first and second assemblies to effect cooperative locking engagement with an engaging member on the other of the assemblies.

Abstract: A buckle that can be manufactured at lower cost and is not unlocked even when a tongue plate is pushed in a locked state is obtained. An intermediate arm 60 is fixed to a lock spring 54 attached to a button 28. Facing walls 68 of leg portions 66 of the intermediate arm 60 face distal ends of horn pieces 26 of an ejector 22. In the locked state, a predetermined clearance 72 is formed between the facing walls 68 and protrusions 70 of the horn pieces 26. Accordingly, even if a tongue plate 20 is moved further in the direction of the arrow A, the facing walls 68 are not moved in the direction of the arrow A. The button 28 is not moved in an unlocking direction (the direction of the arrow A), either, and movement of a latch 48 in a disengaging direction (the direction opposite to the arrow B) is certainly prevented. As protrusions 38 can be formed in a small size, a buckle 10 is formed in a small size, and the buckle 10 can be manufactured at lower cost.

Abstract: A fill level gauge operating by the radar principle and preferably used for measuring the fill level of a liquid or fluid in a container incorporates a microwave generator for generating a microwave signal, a waveguide for conducting the microwave signal, a horn radiator serving as a transmitting and/or receiving antenna, an impedance transformer, and a connecting flange, where the horn radiator is positioned on the near side of the connecting flange facing the liquid and the impedance transformer extends at least partially into the opening of the horn radiator. An obturator plate is designed as an integral extension of the impedance transformer and is positioned between the horn radiator and the connecting flange. This design permits easy replacement of the impedance transformer while providing a secure seal at the junction between the horn radiator and the impedance transformer.