Everhard MM21140 - Folding Knife and Seam Tester

The Everhard Utility Knife and Seam Tester is a combination tool that has a folding utility knife on one end and a folding seam tester on the other end. It has a comfortable, black, anodized aluminum handle that allows for easy use for anyone. The knife and seam on this roofing tool has a probe that locks into place when completely open, and when folded can be safely kept in a pocket, attached to a belt using the pocket clip, or carried in the belt sheath that comes with the tool.

Key Features

• Comfortable aluminum handle
• Quick change folding utility knife
• Membrane seam probe
• Locks into place when open
• Belt sheath included
• Separate liner lock mechanisms for knife and seam tester
• Case included
• Replaces MM21130 Jack Knife & Seam Tester

Dual-purpose tool:

• Combines a folding utility knife with a built-in membrane seam tester for efficient two-in-one functionality. 

Handle:

• Ergonomically shaped anodized aluminum handle with a black finish, offering both lightweight design and durability

Blades:

• 3″ utility knife blade, quick-change design
• Seam tester probe, also folding with separate liner-lock mechanisms for both tools to prevent accidental closure. 

Safety & Portability:

• Locks securely in the open position and folds compactly for safe pocket or belt carry
• Includes a nylon belt sheath and integrated belt clip for convenient access on the job.

Size & Weight:

• Folded dimensions: roughly 4⅜″ × 1½″
• Open length: ~10.625"
• Weight: Approximately 0.60 lb (0.273 kg) including sheath.

• With the tool closed, hold it securely before opening.
• Rotate the utility knife blade outward until the liner lock engages.
• For seam testing, pivot the membrane seam probe outward until its liner lock engages.
• Place the seam probe at the membrane seam area to check the seam.
• When trimming is needed, use the utility knife side only after confirming the blade is locked.
• After use, fold the blade and the seam probe back into the handle and store the tool in its case.

Q: What is the MM21140 Everhard® Chek-N-Cut?
A: It’s a precision measuring and cutting tool designed to help roofers, sheet metal workers, and contractors check dimensions and cut materials accurately in one step.

Q: What materials can it be used on?
A: It works best on sheet metal, flashing, roofing membranes, and other thin construction materials.

Q: How does the Chek-N-Cut improve accuracy?
A: It combines a built-in measuring guide with a cutting edge, allowing you to measure and cut in one step, reducing errors and material waste.

Q: Is the MM21140 Chek-N-Cut durable?
A: Yes. Made with high-quality steel and precision components, it’s built to withstand heavy job site use.