Disc Roller Planimeter OTT Type 130 (1113)
Index: 1113
Year: 1920-1950 ?
Maker: A. OTT, Kemptren, Germany
Dimensions: 37 x 18 x 34 cm
Info
Planimeter Disc Type OTT N° 70558.
Used to measure the area sizes from a map or other drawing by tracing the outline of the area.
This is the version with a tracing lens. Other variants had a tracing point.
