Don t guess when you have directions with the all new YSNGPS Grip Propane Scale by Flame King! Now you can quickly and easily gauge your propane tanks liquid level with just the lift of the Grip Scale. The Grip Scale is equipped with a high precision sensor clear display screen durable weight hook and is compatible with 5 10 20 30 and 40 lb propane cylinders. Propane cylinder and AAA batteries not included. This product ships in approximately 1 days