prism for TOPCON,SOKKIA,LEICA 1.Effective diameter:64mm 2.Integrated angle precision:< +/-5" 3.Using instruments:TOPCON,SOKKI prism for TOPCON,SOKKIA,LEICAEffective diameter::Φ64mmIntegrated angle precision:<±5"Using instruments:TOPCON,SOKKIA,LEICA prism for TOPCON,SOKKIA,LEICA