This thermometer''s accurate mechanism measures temperature in both Fahrenheit and Celsius. The convex glass crystal assures a clear, readable view of the classic numerals. The swivel arm completes the appearance and is easily mounted on a window, wall or post.4" Dial Face with Large numeralsSwivel Arm Mounting Bracket with matching hardwareSolid Brass & Glass ConstructionLiving Finish BrassPrecision Japanese CoilMeasures both Fahrenheit and CelsiusEasy to Read at a GlanceAdjustable for Just the right Angle Durable, attractive finish; tube won''t yellow or crazeWon''t Peel, Flake or Rust; Patinas with ageReliable, Accurate Temperature Readings Warranty: Lifetime