Deluxe Telescope Laser Collimator.

Great for quick alignment of telescope mirrors. Fits into standard 1 1/4 inch eyepiece sockets. The side window allows you to see the alignment while adjusting the primary mirror at the back of your telescope.

• Helps perfectly align Newtonian optics
• Easy to see side window
• Short 4 inch tube for easy storage
• Uses a CR2032 battery (included)
• Stardard 1 1/4 inch size
• Made of anodized aluminum