Designed for use with the Sokkia MS27 Stereoscope, the Sokkia PB1 Stereometer Parallax Bar accurately
measures the height difference of natural and man-made features, such as buildings, mountains and all other landmarks when viewing stereoscopic photographs.
The PB1 parallax bar features a dial indicator which makes readings simple and precise. It also has three color-coded targets on the glass plates, making the MS27 stereoscope easy to use.
Required to study aerial photographs, this Sokkia stereometer has a length of 15.5 inches and a measurement range of 0 to 50 mm. It weighs about 1.1 lb., has a minimum graduation of 0.05 mm, and a minimum estimation of 0.01 mm.