The Liemke Merlin-42 is a durable and easy to use thermal imaging monocular with a 42mm objective lens. The Merlin-42 has a detection range of 1400 meters and a sensitive VOx detector with a sensor resolution of 384 x 288 pixels. The Merlin-42 also has an integrated compass and inclinometer for precise readings of direction and elevation. Liemke Merlin-42 VOx Multifunctional Thermal Imaging Monocular LO-MERLIN42