The 5ive Star Gear Marching Lensatic Compass is liquid filled with fluid to protect against excessive swing or wobble, improving readability while reducing wear. The compass also features a slide ruler, magnifying glass, and a sturdy metal case. Features Sturdy metal case with luminous lettering Liquid filled for easy reading and reduced wear Dual scales in both mils and degrees Scale 1:50,000 meters Includes a built-in slide ruler and magnifying glass Product #: 552958 Manufacturer #: 5179000 UPC #: 690104121154