A Linen Tester (or thread counter) is a compact, folding magnifier primarily used by textile professionals, printers, and stamp collectors to examine fine details. It unfolds into a stable stand that rests directly at the perfect focal height, freeing you from handheld shakiness.
Key Features and Design
- Stable Folding Design: The body collapses flat for pocket storage, but snaps into a rigid triangular stand when in use. This fixed distance eliminates the need to manually adjust focus.
- Built-in Measuring Scales: The base features engraved markings (in both inches and millimeters) with a square inspection window to accurately measure thread count or font sizes.
- High-Clarity Optics: Features distortion-free, scratch-resistant glass or high-quality acrylic lenses with magnifications typically ranging from 5x to 10x.
- Durable Build: Commonly constructed from sturdy metal (like zinc alloy) or high-impact plastic, ensuring longevity even with daily field use.
- Added Lighting: Many modern versions include built-in LED lights for enhanced visibility in low-light environments