Have you ever wondered how we can be sure that grocery store scales and gas station meters can always be correct? Find out on this in-depth episode how the County of Orange regulates weights and measures.

Originally released by Green Planet Films, 2012. Streaming video file encoded with permission for digital streaming by Infobase on November 06, 2014.

Weights and Measures Inspectors --(4:19) -- Undercover at Garcia Recycling -- (4:58) -- What is Inspected? -- (1:50) -- How Do They Check Gas Pumps? -- (3:16) -- Testing and the Environment -- (3:28) -- Weights and Measures at Supermarkets -- (2:32) -- Checking Grocery Store Scales -- (3:28) -- Credits: Weights and Measures -- (0:35).