Three gears for mechanical computer dispensers

Gear teeth: pinion – 20, idler – 22, drive – 40

Diesel version includes:  upgraded steel cylinder covers to aluminum cylinder covers, upgraded steel bottom plate to thicker gauge, nickel-plated bottom plate, upgraded cylinder cover, inlet and outlet O-rings from fluroelastomer to Fluorosilicone O-rings, upgraded steel screws to corrosion-resistant stainless steel screws, upgraded installation O-rings to Fluorosilicone