Definition of romer in English:

romer

noun

  • A small piece of plastic or card bearing perpendicularly aligned scales or (if transparent) a grid, used to determine the precise reference of a point within the grid printed on a map.

    • ‘They can place a car on the surface plate (an accurately measured flat plane) and use what is called a romer arm to calculate the car's dimensions to exact specifications.’

Origin

1930s: named after Carrol Romer (1883–1951), its British inventor.

Pronunciation

romer

/ˈrəʊmə/