1. In an external focussing tacheometer, the fixed interval between the stadia hairs is 5 mm; the focal length of the objective is 25 cm ; and the distance of the vertical axis of the instrument from the optical centre of the objective is 15 cm. The constants of the tacheometer are
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use