English: Version 1 (top) and version 2 (bottom) of the Instrument Unit. Versions 1 and 2 of the IU.
Suomi: IU-versito 1 ja 2.
日本語: 自動制御装置バージョン1(上)とバージョン2(下).
English: Block II Instrument Units. Version 1 (top) had pressurized tubular sections and the IU was 58 in tall. Version 2 (bottom) was only 34 in tall and did not have pressure vessels, markedly reducing weight.
2008-03-19 21:16 EdgarDurbin 1315×1607×8 (215771 bytes) {{Information |Description=Block II Instrument Units. Version 1 (top) had pressurized tubular sections and the IU was 58 in tall. Version 2 (bottom) was only 34 in tall and did not have pressure vessels, markedly reducing weight. |Source=Saturn I Summary,
{{Information |Description={{en|Block II Instrument Units. Version 1 (top) had pressurized tubular sections and the IU was 58 in tall. Version 2 (bottom) was only 34 in tall and did not have pressure vessels, markedly reducing weight.}} |Source=Transferre