Great for All Grade Levels.
- Enviro-Safe black liquid against lead-free, yellow back glass for easy readability and fewer reading errors
- Manufactured and tested by our USA quality team
- Traceable to NIST
- Partial immersion 5 cm (2")
- Length 20 cm (7.9")
Includes multi-language (English, French, German, Italian, Portuguese, and Spanish) Statement of Accuracy and Traceability, non-roll fitting and individual serial number.