Bronze triangulation station mark, British, 1910-1920

Surveying

1910-1920

Bronze station mark for the First Order Triangulation of the Geodetic Survey of Egypt, British, 1910-1920.

Bronze triangulation station mark, American, 1915-1920

Surveying

1915-1920

Triangulation Station Mark, bronze, United States Coast and Geodetic Survey, 1915-20.

Bronze triangulation mark, French, 1910-1914

Surveying

1910-1914

Bronze triangulation mark of the First Order Triangulation of France, unsigned, French, 1910-1914.

Bronze triangulation station mark, Canadian, 1920

Surveying

Triangulation reference mark for the Geodetic Survey of Canada, unsigned, 1920

Bronze triangulation station mark, Canadian, 1920

Surveying

1920

Bronze triangulation station mark for the Geodetic Survey of Canada, 1920

Triangulation mark, French, 1914

Surveying

1914

Brass (?) station mark name plate for the First Order Nivellement General de la France, French, unsigned, 1914.

Bronze triangulation station mark, Canadian, 1920

Surveying

1920

Bronze triangulation mark for the Geodetic Survey of Canada, unsigned, Canadian, 1920.