Select Page

World Leader in Non-Destructive Optical Stress Inspection & Measurement

Strainoptics is the world’s foremost manufacturer of non‑destructive stress measurement instrumentation for the glass and plastics industries.

Our product line encompasses a complete range of instruments, from simple strain viewers and polarimeter systems to specialized on-line and off-line equipment for measuring stress and other optical properties in a wide range of materials including:

GASP® Polarimeter


Strainoptics GASP Polarimeter is an internationally recognized, portable instrument for measuring surface stress in heat-strengthened and tempered glass. It can also be used to confirm stress-relief in annealed glass and to validate furnace settings for manufacturers of safety glass.


If you have any questions, or would like more information, simply E-mail us at or give us a call at (215) 661-0100.

We are happy to provide quotes for any custom testing or products.


SEND US YOUR SAMPLES! If you are unsure which instrument is right for you or if Strainoptics can help you at all, send us samples! We will examine them and provide a feasibility report with our recommendations at no charge.
E-mail us at or give us a call at (215) 661-0100 to learn more.