Telescope with 40 In. Lens

Original Price: $15.95
Sale Price: $9.95
  

Stock #: 502703
Type: Postcard
Era: Linen
City: Williams Bay
State: Wisconsin (WI)
County: Walworth
Publisher: Bishop Post Card Co.
Postmark: 1949 Sep-29
PM City: Conshohocken
PM State: PA
Stamp: 1c
Size: 3.5" x 5.5" (9 x 14 cm)
Additional Details:
The 40-inch telescope o the Yerkes Observatory has the largest lens in the world. The instrument is 63 feet long and with attachments for photographic work 6 feet are added. The tube weighs 6 tons and the moving parts weigh 20 tons. It is so delicately balanced that it can be moved with one hand.
Curt Teich & Co.

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