The M25G1-MECH-NP#5 is a Liquid Controls M-25 class positive-displacement meter configured for mechanical registration (MECH) without an electronic pulser (NP = no pulser), set up to register in 1/10 US-gallon increments and supplied with NIST verification/approval. It’s intended for reliable custody transfer and truck-mounted fueling, offering sustained accuracy with minimal wear due to the non-metal-to-metal rotor design. Standard package includes strainer (40 mesh), mechanical register, and air eliminator.