Accessories For Optical Benches-Multiple Object Needle

The Following Accessories Are Available Optiolly For Use With Optical Benches As Per Cat. Nos. 1110920 Are Provided With Metal Support Rods For Their Vertical Mounting In The Riders. The Sizes Of The Components And Lengths Of The Respective Mounting Rods Have Been Designed To Provide A Common Optical Center. (Multiple Object Needle Four Needles Are Mounted On A Plastic Block In A Straight Line. For Use As Object In Lens And Mirror Experiments.)