. Light and lighting. fire, whichhave to -land a very severe test tmechanical Btrength. Ill- photometer-rooms and testingarrangements at the Ediswan factoryare exceptionally complete. Every lamphas i pa-- an approximate tesl with ashadow photometer, and a certain pro- portion of tin- lamps bo pass* d are Bubse-quently tested accurately n the photo,nut lie bench. There are several moms-one equipped with potentiometer andMil- standard, rotating lamp-hold rs,and all tin- apparatus for accuratephotometry. [noneroom an Ediswan Halt-watt lamp WQe [being tested, in another on,- ihwin:_r. In another p

---

. Light and lighting. fire, whichhave to -land a very severe test tmechanical Btrength. Ill- photometer-rooms and testingarrangements at the Ediswan factoryare exceptionally complete. Every lamphas i pa-- an approximate tesl with ashadow photometer, and a certain pro- portion of tin- lamps bo pass* d are Bubse-quently tested accurately n the photo,nut lie bench. There are several moms-one equipped with potentiometer andMil- standard, rotating lamp-hold rs,and all tin- apparatus for accuratephotometry. [noneroom an Ediswan Halt-watt lamp WQe [being tested, in another on,- ihwin:_r. In another part of the building thepacking and dispatching departmentwas very active. Altogether it wasevident that tin- Edison and SwanUnited Electric <. i- doing it- sharetowards meeting the abnormal demandtHr lamps that ha- arisen in consequ<<<i t he war. SOME RECENT EDISWAN NOVELTIES. Royal Ediswan Lamp-. At the bedside. fWk

---

Size: 2190px × 1141px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookauthori, bookcentury1900, bookdecade1900, bookpublisherlondon