[header] How to measure tongue weight [title] Ensure that the wheels of your trailer are securely blocked to prevent movement. [title] Cut a 5-to 6-foot (1.5 to 1.8 m)-long section of 2 by 4. [title] Lay a pipe across the bathroom scale. 
[title] Lay a second pipe across a brick. [title] Set both of these 3 feet (0.91 m) apart.