Abstract: A system includes a laser measuring module. The laser measuring module is configured to provide a length measurement. The system further includes at least one display module. The display module is configured to electronically display at least one measuring point. The display module is further configured to be separate or removable from the laser measuring module. The bearings of the at least one measuring point are taken using the laser measuring module.

Abstract: A system includes a laser measuring module. The laser measuring module is configured to provide a length measurement. The system further includes at least one display module. The display module is configured to electronically display at least one measuring point. The display module is further configured to be separate or removable from the laser measuring module. The bearings of the at least one measuring point are taken using the laser measuring module.

Abstract: A rangefinder includes a display, an operator control element, a distance measuring apparatus, and a computation apparatus configured (i) to initiate a measurement by the distance measuring apparatus when the operator control element is operated, and (ii) to switch on at least the display when the operator control element is operated with the display switched off.

Abstract: A rangefinder includes a display, an operator control element, a distance measuring apparatus, and a computation apparatus configured (i) to initiate a measurement by the distance measuring apparatus when the operator control element is operated, and (ii) to switch on at least the display when the operator control element is operated with the display switched off.

Abstract: The invention encompasses a glass-ceramic comprising a continuous glass phase and a crystal phase comprising tetragonal leucite, wherein the glass-ceramic has a crack-free glass phase and a crystal phase comprising leucite crystals distributed essentially homogeneously in the glass phase. The crystal phase has a particle size distribution made of from about 5% to about 70% of a first group of leucite crystals having particle sizes of <1 ?m and from about 30% to about 95% of a second group of leucite crystals having particle sizes of ?1 ?m. The proportion of Li2O in the glass-ceramic is preferably below 0.5% by weight. It is preferred that not only the glass phase but also the crystal phase is essentially free of cracks. The corresponding glass-ceramics are particularly suitable for use in the dental sector, in particular as facing ceramics.

Abstract: The invention encompasses a glass-ceramic comprising a continuous glass phase and a crystal phase comprising tetragonal leucite, wherein the glass-ceramic has a crack-free glass phase and a crystal phase comprising leucite crystals distributed essentially homogeneously in the glass phase. The crystal phase has a particle size distribution made of from about 5% to about 70% of a first group of leucite crystals having particle sizes of <1 ?m and from about 30% to about 95% of a second group of leucite crystals having particle sizes of ?1 ?m. The proportion of Li2O in the glass-ceramic is preferably below 0.5% by weight. It is preferred that not only the glass phase but also the crystal phase is essentially free of cracks. The corresponding glass-ceramics are particularly suitable for use in the dental sector, in particular as facing ceramics.

Abstract: The invention comprises a discharge device for dental purposes. This discharge device is filled with a dental ceramic material, preferably an opaque in dispersible form, in particular in the form of a solution or suspension. The discharge device is in particular a spray can.

Abstract: A ceramic restoration based on a leucitic glass-ceramic, which is characterized in that the glass-ceramic includes by way of components 40-95 wt.-% SiO2 5-25 wt.-% Al2O3 5-25 wt.-% K2O 0-25 wt.-% Na2O 0-20 wt.-% CaO 0-8 wt.-% B2O3 0-0.5 wt.-% P2O5 0-3 wt.-% F, in that it contains, as sole crystalline phase, leucite in a total proportion from 20 to 45 wt.-%, at least 80% of the theoretically producible quantity of leucite being present, and in that it exhibits a linear coefficient of thermal expansion &agr;(20-500° C.) from 12.5·10−6 to 15.5·10−6 K−1. This glass-ceramic is particularly suitable for processing as pressed ceramic and can be advantageously faced with dental ceramic that exhibits a linear coefficient of thermal expansion &agr;(20-500° C.) from 13.5·10−6 to 17.0·10−6 K−1.