Dual scale, 660 - 810mm and 26-32
in. A good –quality instruments with Vernier scales reading to 0.05mm and
0.002in opel reflectors and adjustable cistern with white fiducially setting
point; useful where the highest order of accuracy is not required with
thermometer –10oC to 50oC x1oC; on polished
hard wood board. Bore of tube 6mm
