An eyecup and optical filter appliance is disclosed and claimed. A controller is adapted to perform a tool auto-hold function, automatically maintaining an initial tool orientation by processing the angular velocity data and commanding movement of the tool actuator to hold the angular velocity at zero. A terminal fitting and a retainer are mounted in the second housing. The target UE time value can be searched among pre-computed differential value data sets indexed by relevant NodeB site pairs to return sets of frames that can facilitate converging on a location for the target UE. The admixture allows for acceptable workability and development of high early-strength in cementitious compositions without the use of an external heat source.