TUBE Type Flowmeters have the following flow increments.

02 & Air 0 to 15Lpm: 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, Flush
02 & Air 0 to 4Lpm: 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, Flush
C02 0 to 12Lpm: 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, Flush
C02 0 to 3Lpm: 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, Flush