10 T he r ange o f a p r ism r e sults f r o m amo ng o ther things its c oa ting and the g lass geo me tr y A numb er o f o r ig inal p r isms f r o m Leica G eosys t ems hav e a sp ecial c oa ting o n the r efec tiv e sur f ac e s the An tiR efex Coa ting and a c o p p er c oa ting o n the r e v er s e side Withou t the s e the r ange o f dis tanc e me asur ing A T R and P ower s e ar ch would b e r educ ed b y up t o 30 T he wo r kmanship and the dur ability o f the c o p p er c oa ting ar e decisiv e f o r a lo ng lif e T he g lass dimensio ns the p ositio n in the holder and with it the spa tial o r ien ta tio n ar e imp o r tan t f o r me asur ing ac cur acy Leica G eosys t ems p r isms ar e manu f ac tur ed f r o m g lass o f the hig he s t quality and f ur nished with o p tical c oa tings s o tha t e v en under the mos t ex tr eme envir o nmen tal c o nditio ns a lo ng lif e time and maximum r ange o f the hig he s t ac cur acy can b e achie v ed o ri ginal p risms M aximum ac cur acy and r ange 10