Use the UV lamp to show the white colour thread, pen, or pencil on white fabric.
If you want to mark your white quilt but don’t want the colour to show up, this UV backlight is exactly what you need!
The UV lamp will show up white thread, pen, or pencil on white fabric. The thread or pen markings will appear purple under the lamplight. No more wrinkles from squinting, this light will be your new best friend.
Never direct a UV light toward your eyes. For optimal use, turn off other light sources while using.