Theodolite - Henri Dupuis , optique , instrument topographique de précision à niveau à bulle - 1928 - France #1920s france #bubble level #engineering instrument #henri dupuis #historical surveying #precision optics #surveying tool #theodolite #topographic instrument
La Filotecnica - Topographic theodolite - Iron - 1940-1950 #engineering #iron instrument #land surveying #mid-20th century #precision measurement #surveying tool #theodolite #topographic instrument
