ParticleLarge Sized Chart 59x 42inch, inchcludinchg more about neutrinchos and a section on Unsolved Mysteries inchcludinchg dark matter and dark energy.
Particle Poster Sized Chart 30 X 21 inch, inchcludinchg more about neutrinchos and a section on Unsolved Mysteries inchcludinchg dark matter and dark energy.
X-ray goniometer, document angles on X-ray negatives, 180 deg head has two opposing scales marked in 2 1/2 deg increments, Black anodized aluminum with easy-to-read white radiopaque markings, size: 8 in