6.2 Oldest Rules

The 25 oldest rules in the collection are presented below. For items in this list for which only a date range or educated guess (circa) is known, the earliest year is used.

Maker	Model		Year	Type	Mat	L0	Lx
Jacob and Halse	Sector		1809	L	iv	5.00	12
Gill	Comparative Rule		1816-1824	L	wd	9.00	9
Gill	Proof Rule		1816-1824	L	wd	9.00	9
noID	Gunter Rule		1820	L	wd	12.00	24
Belcher Bros.	Engineer’s Rule		1831-1843	L	wd	10.25	12
Davies	Routledge Engineer		1840	L	wd	11.00	12
Palmer	Palmer’s Computing Scale		1843	C	pp	27.00	11
Palmer	Palmer’s Pocket Scale		1845	C	pp	10.00	3
Dring and Fage	Excise Officers Rule		1845-1849	L	wd	8.00	10
Stanley	No. 15		1858	L	wd	11.00	12
noID	Comparative Rule		1880	L	wd	9.00	9
Tavernier-Gravet	Soho		1882-1900	L	wd	8.00	8
Dring and Fage	Inland Revenue Rule		1883-1902	L	wd	12.00	24
Faber	360		1897	L	wd	10.00	10
Faber	365		1898-1900	L	wd	10.00	10
E.S.A. London	Harrow Mark Reducer		1898-1925	L	wd	11.00	36
Scofield	Engineer’s Slide Rule		1901	L	wd	22.00	24
Kolesch	Mannheim		1901-1904	L	wd	10.00	10
Dietzgen	1765		1902-1912	L	wd	10.00	10
Faber	350		1903	L	wd	10.00	10
K&E	4054		1903	L	wd	10.00	10
K&E	4041		1904	L	wd	10.00	10
Faber	367		1904-1905	L	wd	10.00	10
K&E	4035		1905	L	wd	8.00	8
K&E	4041		1905	L	wd	10.00	10

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