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Keuffel & Esser (K&E) Auto-Collimation Illumination Unit # 71-5511, US $2800 – Picture 0
Keuffel & Esser (K&E) Auto-Collimation Illumination Unit # 71-5511, US $2800 – Picture 0

Keuffel & Esser (k&e) Auto-collimation Illumination Unit # 71-5511

US $2800

  • Boylston, Massachusetts, United States
  • Oct 31st
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Auto Collimation Illumination Unit #71-5511 This vintage item is an accessory to the K&E alignment telescope model 71-2022, that allows one to use it as an autocollimator, and "square up" the scope's line-of-sight to a flat mirror.  The 110 VAC cord is approx 5 feet in length to the transformer, the secondary 6 VAC line is approx 12 feet in length, and includes a line switch  near the lamp housing.   This has been in storage for many years; the cord casing is dry and brittle with numerous cracks, but it still works; see last photo.  A spare GE #328 lamp is included. Look for my soon-to-be listed K&E alignment telescope, model 71-2022, which accepts this item.

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