细节
A nickel-plated brass surveying level,
signed H. Morin 11, rue Dulong, Paris, the telescope with rack focusing, lens cap and secured to the limb by twin clamps, with graduated bubble level on three-screw tripod mounting with tangent-screw fine adjustment and clamp
signed H. Morin 11, rue Dulong, Paris, the telescope with rack focusing, lens cap and secured to the limb by twin clamps, with graduated bubble level on three-screw tripod mounting with tangent-screw fine adjustment and clamp