the Zenith Monitoring Tool βZMTβ (a special double reflector pole with circular prism at the bottom, 360o reflector at the top) β at Zenith Monitoring Tool + LEICA TM30+NIVEL
the Zenith Monitoring Tool βZMTβ (a special double reflector pole with circular prism at the bottom, 360o reflector at the top) β at Zenith Monitoring Tool + LEICA TM30+NIVEL