TEMTS0200 - Tempil 200°F Temperature Indicating Crayon

Precision Temperature Indication for Industrial Applications

The Tempilstik 200°F (93°C) is the original and industry-standard temperature-indicating stick, designed to provide a simple, rugged, and highly accurate method for measuring surface temperatures in industrial environments. Manufactured by Tempil, a leader in thermal monitoring solutions, this stick utilizes phase-change technology to determine when a workpiece has reached a specific thermal threshold. Unlike electronic thermometers or infrared guns, which can be affected by emissivity, reflection, or battery failure, the Tempilstik relies on the immutable laws of physics: the material melts precisely when it reaches its rated temperature of 200°F.

For quality assurance and compliance professionals, the Tempilstik offers peace of mind through traceability. Each stick is lot-numbered and traceable to the National Institute of Standards and Technology (NIST), making it an acceptable tool for code-compliant work in sectors such as aerospace, petrochemical, and structural steel fabrication. With an accuracy rating of +/- 1% of the rated temperature, it rivals many digital devices while offering superior durability and ease of use. The stick is formulated to be free of lead, sulfur, and other contaminants, ensuring it does not compromise the metallurgical integrity of the substrate.

This specific 200°F indicator is widely used for verifying preheat temperatures on mild steel and low-alloy steels to prevent hydrogen-induced cracking. It is also essential for monitoring interpass temperatures during multi-pass welding operations. The product comes housed in a durable, adjustable metal holder that protects the stick from breakage and allows for maximum usage of the material. Whether used in a controlled workshop or a rugged field site, the Tempilstik 200°F remains a critical tool for maintaining thermal process control.

Key Technical Benefits

• High Accuracy: consistently melts within 1% of 200°F.


• Compliance Ready: Meets AWS D1.1, ASME Code Sec. I, III, and VIII, and ANSI/ASME Code B31.1 and B31.3 requirements.


• Surface Versatility: Effective on smooth, rough, or rusty surfaces where IR guns may struggle.