Leica Geosystems prisms are manufactured from glass of the highest quality and furnished with optical coatings so that even under the most extreme environmental conditions, a long lifetime and maximum range of the highest accuracy can be achieved.

Due to its small size, this low-cost alternative provides the greatest pointing accuracy of 1.5mm. However, the GRZ101 has restricted functionality with the TPS Power Search, and a shorter ATR range than the standard size reflectors.