Permitting 2 independent measurements with installation of single flowmeter, Daniel™ Models 3415 and 3416 combine 4-path fiscal meter with additional check meter, while Model 3417 provides 2 fiscal meters for full redundancy and equal accuracy. Two-in-one redundant design delivers continuous on-line verification of custody transfer measurement integrity, device health, and process conditions, and optimizes fiscal metering confidence while ensuring regulatory compliance.