AT 900 Model T (BM/BI/BP/BQ)
The Applanation Tonometer AT 900 model T from Haag-Streit, is set on the guide plate over the slit lamp axis, for tonometry purposes. The instrument can be moved between two positions on the guide plate for observation through the right or left eyepiece. The sensor arm with the measuring prism projects from the underside into the beam path of the microscope and the illumination. Tonometer will need to be removed from the slit lamp to perform exams.