Object Markers are intended to cast a shadow onto an object screen in light experiments.
For use with our Student Model Optical Bench (#4-66000).
WARNING: This product can expose you to chemicals including nickel, lead, and chromium, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.