Weights & Measures
Skip Ribbon Commands
Skip to main content

Weights & Measures

The Weights and Measures Section works every day to protect and promote equity in the marketplace of Indianapolis-Marion County. Any commercial transaction based -- in whole or in part -- on weight, measure, or count is subject to the Section’s regulatory oversight. It is estimated that the sales of products or services impacted by weights and measures laws in the United States represent approximately 50 percent of the U.S. Gross Domestic Product.

Every year, the dedicated inspectors of the Weights and Measures Section inspect and test thousands of scales, fuel dispensers, taximeters, and other devices – as well as investigate numerous consumer complaints – to ensure fair and free enterprise within all of Marion County. Weights and Measures inspectors require extensive training; it is essential to possess a thorough knowledge of the proper examination of each device’s legal specifications and tolerances, various characteristics of different types of commodities, proper use and care of a wide range of precision measuring equipment, and the application of established standard measurement procedures. 

One of the oldest roles of government, Weights and Measures can even be found in the “Articles of Confederation” and the “Constitution of the United States.” The global and national markets depend on what Weights and Measures stands for: uniform standards of mass, volume and length that protects the consumer and facilitates trade.



(317) 327- 3835

Useful Links:

Helpful Hints

Retail Motor-Fuel Dispensers

When purchasing fuel for your vehicle, please be aware of the following:

  • Always observe the transaction from beginning to end. Do not re-enter your vehicle while fueling.

  • Make sure the dispenser is set to zero prior to fueling. If you encounter “pump jump” --when the fuel pump meter clicks ahead a few cents before you start pumping, which means you're paying for gas you're not getting-- immediately hang up the nozzle before pumping any fuel and inform the station attendant. Typically the attendant will refund the few cents the dispenser has registered and reset the pump to zero. However, if you continue to pump after it jumps, the station’s console (the computer connected to all the pumps) will have no way to show the amount of the ”jump,” as it only shows the total transaction amount. That is why it is necessary to inform the attendant of the situation immediately.
    If the station’s attendant refuses to refund the difference, will not reset the pump, or if the dispenser jumps again after it has been reset, contact Weights and Measures at (317) 327- 3835 or
    WnM@indy.gov and we can investigate.
    Be wary of anything that impairs your ability to read any of the dispenser’s indications.

  • Look for Weights and Measures approval stickers, which are usually located on the face of the dispenser. These stickers are approval stickers: the dispenser only gets a sticker if it has passed both an inspection and a tolerance test. If a sticker is missing, it is possible that the dispenser in question failed inspection, or that a new dispenser/dispenser part has been installed since it was last checked. Just because it doesn’t have a sticker does not mean an inspector has not been there.

  • If you believe you may have received water in your fuel, or for other fuel quality concerns, contact the State Division of Weights and Measures’ Motor Fuel Inspection Program at (317) 356-7078, extension 221.

  • For any other concerns or questions regarding retail motor-fuel dispensers, contact the DCE’s Weights and Measures Section at (317) 327- 3835 or WnM@indy.gov. Provide as much detail as possible, including station, address, pump number, type of fuel, and any other relevant information. Please keep your receipt!

Fuel Tank Capacity and Gas Pump Accuracy – NIST article

Market Scales

  • All scale indications must be clearly visible to the consumer, including weight, unit price, total sale price, and other information displayed for the transaction.
  • Look for the approval sticker seal on the device.
  • Pay only for the product, not the packaging. When you purchase an item from bulk, you should pay only for the weight of the item and NOT the container; this is commonly referred to as tare, and is the difference between net weight and gross weight. Some electronic scales are set to automatically deduct the weight of the packaging and some are not. If you have any concerns, ask to have the package weighed again before you buy.
  • Ensure the scale is set to zero before any weighing occurs, unless tare has been entered.
  • Read the labels. Items such as net weight, unit price, and total sale price will help you determine what the best deal is for your dollar, and these are all required to be on the label.


  • Taximeters calculate a monetary value based on distance traveled, time elapsed, or a combination thereof.

  • Remember to examine the taxi’s fare schedule, located on the side of the vehicle, before entering the taxi. The prices listed must match what is charged on the meter.

  • All of the meter’s indications must be clearly visible to passengers. If your view is obstructed, ask the driver to remove what might be blocking your view.

  • The driver’s taxi operator license and vehicle’s license must be clearly visible to passengers at all times.

  • To report a complaint, please call (317) 327-3835 for meter issues or (317) 327-8294 for other issues. Complaints can also be emailed to either WnM@indy.gov or taxi@indy.gov. Please provide the date, time, cab number, and a description of the event and your contact information.