Classroom Periodic Table of the Elements Photo Poster by Theodore Gray (40x20 in.) 6-12+ This red light cold laser

This red light cold laser therapy acupuncture pen is the #1 red laser pointer of choice among chiropractors

refraction and color easy and fun

and more for the students to reference at their desks when doing calculations

TSA compliant and more compact than a standard 6" engineering scale ruler

Comes in a secure black foam case with batteries included

Classroom Periodic Table of the Elements Photo Poster by Theodore Gray (40x20 in.) 6-12+ This red light cold laserThis iconic periodic table poster by author Theodore Gray shows real photos of every stable element painstakingly collected and photographed in high resolution. This 40" x 20" (100cm x 50cm) poster is single sided, laminated, and made in the USA on top quality paper with high resolution printing methods. For a heavy duty classroom sized version, look at our 53" x 27" double sided edition here. *Note that the small poster does not have element names