This may be a repeat but I haven't seen it described.
In the PBS series "Auschwitz", the first segment describes the
architectural design offices where the various building were first
designed. One scene shows a work table with drawings and instruments
on it with a (definitely to me) a well worn slip top card board slide
rule case but no rule. In the second segment, a similar view show
drawings with a slide rule on the table. This appears to be a Rietz
type but possibly a Darnstadt type -- the scene was very short.

Marion Moon