Related Object Info
cathetometer
The instrument rests on three feet, each of which has a leveling screw. Two bubble levels are on the base. The pillar rotates and can be finely adjusted by two tangent screws. There is no vernier or scale for that purpose.
A graduated silver line runs along the pillar. The division is in centimeters, from 10 to 120. The smallest division is 0.1 cm. A vernier is attached to the bracket supporting the telescope. It is divided from 0 to 50, the smallest division being the unit. The vernier is hinged, so it can be slightly lifted of the graduated line. On the left, a sliding part on which was probably fixed a magnifying lens to look at the vernier (missing here). A screw is used for fine height adjustments.
The telescope is held in place by two U-brackets. A bubble level sits on top of it. A tangent screw is used to precisely adjust the vertical inclination of the telescope. A counter weight is attached to a sliding support at the back.
Original price in 1900: 1,000 Swiss Francs (according to the Société Genevoise trade catalogue).