Tele Vue 24mm Delos 2" Eyepiece - EDL-24.0 60 mm Spotting Scopes There is a lock screw

There is a lock screw on the side of it

Equipped with William Optics’ patented internal focus design

The specific arrangement of the slots creates an "X" shaped pattern which shifts as the object comes into focus

Working Temperature

Tele Vue 24mm Delos 2" Eyepiece - EDL-24.0 60 mm Spotting Scopes There is a lock screwTele Vue 24 mm Delos 2" Eyepiece Here is what Tele Vue has to say about their new Delos 24 mm Eyepiece: Tele Vue first introduced our 72 apparent field Delos eyepiece line in April 2011 at the Northeast Astronomy Forum (NEAF) in Suffern, NY. The current line includes eight eyepieces spanning focal lengths from 3. 5 to 17. 3 mm. This year Tele Vue expands this popular, eyeglass friendly eyepiece line by introducing the 2, 24mm Delos at NEAF in April