Rotary measuring stage dia 130mm is mounted on the table. With 55mm glass aperture, circular graduated scale is divided into 360-degrees. Observation Tube Monocular, inclined at 45-degrees fitted with Goniometric head graduated 360 degrees. Base Large and heavy base provides extra overall rigidity to the instrument. Stage 125mm X 125mm with interchangeable intermediate table to receive different optional accessories.Equipped with micrometer head.