Size 178 mm (7") internal focussing fitted with horizontal circle graduated to read 6 minutes with vernier and can be quickly preset to zero degree. A 45 sec. sensitive bubble is mounted on the side of the telescope and a 8 minutes sensitive circular bubble is built in the tribreach. All movable parts are made of gunmetal & brass, supplied with all standard accessories in F.R.P. Box & telescopic wooden stand.