36 C.F.R. § 1254.44 How long may I use a microfilm reader?
Title 36 - Parks, Forests, and Public Property
(a) Use of the microfilm readers in the National Archives Building is on a first-come-first-served basis. When other researchers are waiting to use a microfilm reader, we may place a 3-hour limit on using a reader. After 3 hours of machine use, you may sign the waiting list for an additional 3-hour period. For fire safety reasons, we may limit the number of researchers in the microfilm research room in the National Archives Building to those researchers assigned a microfilm reader. (b) Archival operations directors at our regional archives may permit reservations for use of microfilm readers and set time limits on use to meet local circumstances.
Title 36: Parks, Forests, and Public Property
PART 1254—USING RECORDS AND DONATED HISTORICAL MATERIALS
Subpart B—Research Room Rules
Rules Relating to Using Microfilm
§ 1254.44 How long may I use a microfilm reader?

