Clear glass tube. Measures rain in 1 inch increments up to 5 inches. Replacement rain gauge tube. Dimensions: 5.75" long, 1" outside diameter, 1.25" top lip. Dimensions: 1" outside diameter x 5.75" length. Note: Some very small variation may occur in diameter may be up to 1.015". Clear glass tube. Measures rain in 1 inch increments up to 5 inches. Replacement rain gauge tube. Rain gauge replacement tube (see dimensions for correct fit). Measure your holder to ensure it will fit.