Electrical door locking and operating device, Figure 3- Emergency mechanical release. - NARA - 296684.jpg
en
Electrical door locking and operating device, Figure 3 Emergency mechanical release. NARA 296684, Emergency door unlock, Door locks, US National Archives series: Administrative Files, Images from the National Archives and Records Administration, US National Archives location: other, Electrical door locking and operating device, Figure 3: Emergency mechanical release.
commons
ja
電気ドアロックと動作装置図3 緊急機械解除。NARA 296684、非常ドアアンロック、ドアロック、米国国立公文書館シリーズ:管理ファイル、米国国立公文書館所蔵画像、米国国立公文書館所蔵:その他の、電気ドアロックおよび動作装置、図3:緊急機械解除。
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electrical device holding device mechanical device service door coin-operated emergency service demonic unlock