Marina Minerva Digital Thermometer is an easy-to-read liquid crystal display (LCD) aquarium thermometer that is reliably accurate to plus-or-minus 1° F: no guessing, no color confusion. Mounts vertically and easily sticks to the outside surface of any aquarium.

• Accurate and easy to read
• Mounts easily on outside glass
• Removable

Just place this removable thermometer in an easy to read position below waterline.

Approximately 3/4" inches x 5" inches