7.4 Oldest Rules

The 25 oldest rules in the collection, listed according to the Year variable in the database. For this list, the earliest year is used for rules in which only a date range or educated guess (circa) is known.

Maker Model Year Type Mat Length
Jacob and Halse Sector 1809 L iv 5
Davies Routledge Engineer
1825 L wd 11
noID Comparative Rule
1880 L wd 9
K&E 4041
1895 L wd 10
Faber 365
1898 L wd 10
Faber 367
1900 L wd 10
K&E 4041
1900 L wd 10
K&E 4054 1900-1914 L wd 10
Dietzgen 1762B
1904 L wd 10
Dietzgen 1762B
1905 L wd 10
Faber-Castell 363
1905 L wd 10
Stanley Fuller’s Calculator Model No. 1 1909 H wd 500
Dietzgen 1761-AL 1910-1912 L wd 8
K&E 4053-2 1910-1914 L wd 8
K&E 4053-3 1910-1914 L wd 10
Richardson Direct Reading (812)
1911 L Al 10
Richardson Direct Reading Pocket
1912 L ss 5
Richardson Direct Reading Pocket
1912 L ss 5
Richardson Pantocrat 812
1912 L ss 10
K&E 4092 1913 L wd 10
K&E 4133 1913-1922 L wd 8
Dietzgen 1759 1914-1915 L wd 10
K&E 4058
1915 L wd 10
K&E 4041 1915-1921 L wd 10
K&E 4100 1915-1922 L wd 10