![](https://coimages.sciencemuseumgroup.org.uk/260/742/large_thumbnail_b780543.jpg)
Perspective drawing apparatus, incomplete, in integral mahogany case
1760-1770
1760-1770
1858
1858-03-02
1865-1866
1858
1960
1758-1769
1758-1769
1758-1769
1927
1758-1773
1790-1819
1858
1758-1769
1896
1874
1857
1758-1773
1898
1770-1820
1914
1986
1970-1973
1939-1945
1916
1980-1986
1980-1986
1872
1851-1900
1980-1986
1889
1889
1889
1889
1889
1889
1889
1889
1889
1890-1922
1864
1939-1945