Accu-Mix - 32 oz Oil to Gas Measuring Bottle for Two-Cycle Engines 
SeaDog 588614 

Dimensions are as follows - (See Picture 2 for reference) 
A = 9"    B = 3 1/8"   

Accurately measures the correct oil to gas mixture for all 2-cycle engines. 
Mixtures of 24:1, 33:1, 40:1, 50:1, and 100:1 ratios are shown on the see-thru bottle in both gallons and liters. 

Directions for use - 
1. Determine the exact amount of gasoline you are adding to your tank.  
2. According to your engine's recommended mixing ration, fill the bottle with 2-cycle engine oil up to the corresponding oil mark for the amount of gas you will be adding to your tank.