Abstract: A device for reception and transmission of electromagnetic waves in the visible and/or infrared spectral region and/or the UV-region, emitted by a gaeous, liquid or solid material sample, to an analytical unit, preferably for the determination of the temperature of the material sample. The device comprises a heat-resistant sleeve, open at the front end, with a light wave guide coupled to the analytical unit. In order to record the electromagnetic waves of high intensity, the device has a heat-resistant protective element, arranged at the front end region of the sleeve, which conducts electromagnetic waves.

Abstract: A ground-boring device with a ground auger, which features a boring spindle driven by an engine-transmission unit. A framework is provided with a travelling gear. On the grip ends of the framework is provided a handgrip arrangement located during operation of the device at roughly the gripping level of a service person and a seating device for mounting of the engine-transmission unit of the ground auger, arranged in a longitudinal direction to the framework at a horizontal distance from the travelling gear. The handgrip arrangement is positioned such that the boring spindle essentially runs vertically so that the seating device permits a swinging of the ground auger in relation to the longitudinal direction of the framework during its penetration into the ground.