Germany This country made a wide range of rules - including some of the best quality rules in the world. They also exported to many countries.
Maker	Model	Notes		Origin
A.W. Faber	No name	A very early Faber slide rule
Faber Castell	57/87	Reitz - a good basic design	Two version of this rule are shown.
Faber Castell	57/88	An advanced student's rule
Faber Castell	1/54	Cursor extends to top and bottom - three versions shown
Faber Castell	1/54 A	Similar to above but with addiator.	Instructions on use of addiator.
Faber Castell	360	Two versions of this rule (1905 and 1938) included.
Faber Castell	375	A version of the Rietz standard.
Faber Castell	367	Has a digit registering cursor.	Breif instructions on use of cursor.
Faber Castell	1/98 Elektro	Has some scales in well of stock.	Instructions.
Faber Castell	2/83N	If not "the best" then certainly "one of the best" slide rules ever produced	Original instructions.
Faber Castell	2/82	Could be considered an evolutionary step toward the 2/83N. Two versions (1957 and 1967) shown.
Faber Castell	52/81	A general purpose rule with some commercial functions.
Faber Castell	52/82	Made by a German company in their Swiss factory
Faber Castell	2/84N	The Mathema - with an unusual scale arrangement
Faber Castell	1/28	Super Business.
Reiss	Progress 3223	A metal rule without coating on the scales.
Nestler	Not given	No model number given but has a Nestler patent.
Nestler	Possibly No 14	Model number not marked. Sold by a British company
Nestler	23R and 0239	Two standard Rietz pattern rules  -separated by a few decades
Nestler	7/52	A rule for commercial use.
Nestler	Traffic movement	A rule for movement of convoys	Description of special scales.
Ecobra	1611	A well made, German all metal rule.
Dennert & Pape	Log-log	This rule was described by Pickworth in his book "The Slide Rule"
Dennert & Pape	Un-named	Sold by Davis of Derby, UK
Aristo	0903 Scholar	A good simple student's rule
Aristo	0968 Studio	Two models, one of them made well into the age of scientific calculators
Aristo	0971 Hyperlog	A slide rule with hyperbolic functions
Aristo	0972 Hyperlog	One of Aristo's most complete rules.
Meissner	Nr 1172	An interesting rule with scales for addition and subtraction.	Description of linear scales for addition and subtraction.	DDR
Veb Mantissa	Darmstadt II	Has log-log scales on the slide.		DDR
Veb Mantissa	Mono Rietz	Same sickly green green colour for the slide as the Darmstadt		DDR

Notes:
Original instructions: scanned version of maker's original instructions
Full instructions: complete instructions based on book or similar.
Instructions: instructions based on my own research.
For some rules instructions are given for special scales only.