10 inch theodolite made by Troughton & Simms, London. Used at Melbourne Observatory.

Physical Description

Horizontal circle & vertical arcs are divided on silver to 5 minutes. Two opposing micrometer microscopes rigidly fixed to the outer axis are used for reading the horizontal circle. Illuminated axis, lamp & bracket. Tangent screws with spring. Achromatic telescope. Erect inverting & diagonal eyepiece. Stride level.

More Information