The details needed to produce a microclimate for the display of objects are given. The information is derived from the author's personal experience, discussion with other conservators and theory. It should be possible to set about producing a microclimate in a showcase following the guidelines given. (Abstractor's note: The author's common sense lifts this paper to an above average status.) See also AATA 21-1272> for further discussion of museum climate control and display cases.