Dumpy level, made by John Benjamin Dancer, Manchester, c.1850.
Science Museum Group
© The Board of Trustees of the Science Museum
Dumpy level, made by John Benjamin Dancer, Manchester, c.1850.
Science Museum Group
© The Board of Trustees of the Science Museum
Dumpy level, made by John Benjamin Dancer, Manchester, c.1850.
Science Museum Group
© The Board of Trustees of the Science Museum
Dumpy level, made by John Benjamin Dancer, Manchester, c.1850.
Science Museum Group
© The Board of Trustees of the Science Museum
Dumpy level, made by John Benjamin Dancer, Manchester, c.1850.
Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum