---
product_id: 20347283
title: "Markal Thermomelt Temperature Indicator Heat Stick, 350 Degrees Fahrenheit, 5\" Length"
brand: "markal"
price: "VT6666"
currency: VUV
in_stock: true
reviews_count: 11
category: "Markal"
url: https://www.desertcart.vu/products/20347283-markal-thermomelt-temperature-indicator-heat-stick-350-degrees-fahrenheit-5
store_origin: VU
region: Vanuatu
---

# Accurate to ±1% at 350°F Fast 0.5 sec response time 33% bigger & break-resistant Markal Thermomelt Temperature Indicator Heat Stick, 350 Degrees Fahrenheit, 5" Length

**Brand:** markal
**Price:** VT6666
**Availability:** ✅ In Stock

## Summary

> 🔥 Melt the competition with precision you can trust!

## Quick Answers

- **What is this?** Markal Thermomelt Temperature Indicator Heat Stick, 350 Degrees Fahrenheit, 5" Length by markal
- **How much does it cost?** VT6666 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/20347283-markal-thermomelt-temperature-indicator-heat-stick-350-degrees-fahrenheit-5)

## Best For

- markal enthusiasts

## Why This Product

- Trusted markal brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Response:** Instant 0.5-second melt for real-time temperature feedback—no downtime.
- • **Ergonomic Design:** Metal shaft holder with pocket clip and gravity advance keeps your tool ready on the go.
- • **Certified & Trusted:** Meets ANSI/ASME & AWS standards with NIST traceability—industry-grade reliability.
- • **Durability Meets Size:** 33% larger, reinforced stick reduces replacements and boosts uptime.
- • **Precision Heat Detection:** Pinpoint surface temps within ±1% for flawless metalwork.

## Overview

The Markal Thermomelt Heat Stick is a 5-inch, reusable temperature indicator designed for high-accuracy surface temperature measurement up to 350°F. Certified to rigorous industry standards, it features a fast 0.5-second response time and a 33% larger, break-resistant design for enhanced durability and efficiency in demanding industrial applications like welding, forging, and nuclear power.

## Description

Thermomelt when temperature measurement is critical. The Markal Thermomelt temperature indicator with superior break-resistance is the industry’s largest, longest-lasting stick, improving efficiency and uptime. New Certified Thermomelt Heat Stiks are specifically analyzed and certified to contain low concentrations of halogens, sulfur and low melting point metals (less than 250 ppm). Ideal for use in nuclear power generation facilities such as shipbuilding, atomic energy or anywhere that nuclear certification is required. 33 Percent bigger and stronger; same proven reliability. Bigger, break-resistant stick cuts down on replacement costs. Improved holder features a durable metal shaft and convenient pocket clip. Gravity advance holder protects stick and prevents it from slipping back inside. Meets ANSI/ASME Code B32.1 and B31.3, AWS D1.1 and ASME Code Sec. I, III and VII, NIST traceable. Typical application includes: ship building, pressure vessels, boiler systems, bridge construction, power piping systems. Made in the USA.

Review: Works great! - This product works great just as intended. I find it useful when welding thin metal so I don't blow through although I have quite a few co-workers who find them useless in their specialties. I'd recommend buying this if you work with thin metal or need a somewhat accurate indicator of temperature when preheating metal. I give it 5 stars but this is a product that's usefulness is individualized. Always think before you buy but 20 dollars isn't terrible in this line of work either.
Review: Five Stars - Came broken but works as Required!

## Features

- Accurate, fast, low-cost method for measuring surface temperatures
- Ideal for applications such as annealing, forging, welding, bending, forming
- Initially the mark appears dull and chalky then quickly melts to a transparent-appearing liquid
- Accurate to within +/- 1 percent of rated temperature
- 33 Percent bigger and stronger; same proven reliability

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001YYBHF8 |
| Additional Features | High Accuracy |
| Age Range Description | Adult |
| Best Sellers Rank | #39,283 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Temperature Indicators |
| Brand Name | Markal |
| Customer Reviews | 4.0 4.0 out of 5 stars (157) |
| Display Type | Analog |
| Global Trade Identification Number | 00048615866970 |
| Immersion Depth | 5 Inches |
| Included Components | Adjustment Ring, Protective Hold |
| Indoor Outdoor Usage | Indoor |
| Item Length | 5 Inches |
| Manufacturer | LA-CO Markal |
| Model | 86697 |
| Model Name | 86697 |
| Outer Material | Metal |
| Part Number | 86697 |
| Product Care Instructions | Wipe Clean |
| Response Time | 0.5 seconds |
| Reusability | Reusable |
| Specification Met | Certification |
| Style Name | Fahrenheit |
| UPC | 048615866970 |
| Unit Count | 1.0 Count |
| Upper Temperature Range | 350 Degrees Fahrenheit |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Markal
- **Display Type:** Analog
- **Included Components:** Adjustment Ring, Protective Hold
- **Model Name:** 86697
- **Outer Material:** Metal
- **Product Care Instructions:** Wipe Clean
- **Special Feature:** High Accuracy
- **Specification Met:** Certification
- **Unit Count:** 1.0 Count

## Images

![Markal Thermomelt Temperature Indicator Heat Stick, 350 Degrees Fahrenheit, 5" Length - Image 1](https://m.media-amazon.com/images/I/71sLJoos2VL.jpg)

## Available Options

This product comes in different **Temperature Range, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great!
*by A***W on March 19, 2022*

This product works great just as intended. I find it useful when welding thin metal so I don't blow through although I have quite a few co-workers who find them useless in their specialties. I'd recommend buying this if you work with thin metal or need a somewhat accurate indicator of temperature when preheating metal. I give it 5 stars but this is a product that's usefulness is individualized. Always think before you buy but 20 dollars isn't terrible in this line of work either.

### ⭐⭐⭐⭐⭐ Five Stars
*by S***E on September 11, 2016*

Came broken but works as Required!

### ⭐ broken tightening mechanism and crayon
*by W***N on March 2, 2026*

Would not order online for this product. I ordered two different ones and both of them has the crayon broken up to pieces. The tightening mechanism also does not function well. The crayon itself does accurately tell the temperature. The brokenness of the tightening mechanism just truly makes this product unusable.

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-07*