H-B Easy-Read Pocket Liquid-In-Glass Thermometer; 20 to 120F, Window Metal Case, Environmentally Friendly (B60370-0800) Equipped with Window Metal Case to protect from breakage Lead-free, yellow back glass and black liquid provides easy readability and fewer reading errors EnviroKleen certified; Contains non-toxic, biodegradable, Enviro-Safe liquid; Traceable to NIST Ideal for field studies, waste water treatment and any on-the-go applications Range: 20/120F; Divisions: 1F; Accuracy: 1F; Length: 160mm (6.3"); Total Immersion