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Weighmasters and their deputies are licensed by DMS to certify the weight, measure, or count of any commodity that is sold when the purchaser is not present at the time of sale. Some of the most common examples of such transactions are sand, gravel, ready-mix concrete, and bulk materials.

Weighmaster Certificates are recognized by the justice system as being legal documents. As such, there are certain criteria that must be followed by Weighmasters when issuing Weighmaster Certificates. The Sealer of Weights and Measures is responsible for inspecting and providing regulatory oversight of all licensed weighmasters in Orange County.

Information and Legend Required on Weighmaster Certificates

'12714 (a) There shall appear in an appropriate and conspicuous place on each certificate, and all copies thereof, the following legend:


THIS IS TO CERTIFY that the following described commodity was weighed, measured, or counted by a weighmaster, whose signature is on this certificate, who is a recognized authority of accuracy, as prescribed by Chapter 7 (commencing with Section 12700) of Division 5 of the California Business and Professions Code, administered by the Division of Measurement Standards of the California Department of Food and Agriculture.

(b) There shall also appear on each certificate, and all copies thereof, the printed name of the principal weighmaster as it appears on the license. Note: any reference to Public, Private, or Public at Large shall be removed.

'12714.5 All information contained on the certificate shall be clear and legible. Each certificate shall be numbered consecutively.
'12715 Each certificate shall provide for the following information as applicable to the transaction:
(a) The date on which the weight, measure, or count was determined.
(b) The street address or location description and the city or township where the weighing, measuring, or counting occurred.
(c) The complete signature of the weighmaster who determined each weight, measure, or count. The name of a weighmaster may be imprinted electronically on the weighmaster certificate in lieu of a handwritten signature, if the electronically imprinted name is that of the weighmaster who weighed, measured, or counted the commodity or that of another weighmaster pursuant to Section 12712.
(d) The kind of commodity and any other information that may be necessary to identify the product or distinguish it from a similar commodity.
(e) The number of units of the commodity. If not personally determined by a weighmaster, the certificate shall contain the words "driver's count" or "loader's count", as appropriate, after the number of commodity units. The abbreviation "D.C." or "L.C." may be used in lieu of the complete words.
(f) The name of the owner, or his or her agent, and the consignee. If the transaction involves hay or hay products, the name and address of the grower, and his or her agent, as provided by the driver of the vehicle.
(g) At least one of the following:

(1) The gross weight of the commodity and the vehicle or container, if only the gross weight was determined.
(2) The tare weight of the unladen vehicle or container, if only the tare weight was determined.
(3) The gross, tare, and net weights when a gross and tare are used in determining the net weight.
(4) The true net weight, measure, or count when no gross and tare weights are involved in determining the net quantity of the product.

(h) The tare weights, and the code identification or description of boxes, bins, pallets, or other containers.
(i) The correct identification of the vehicle, combination of vehicles, or other means by which the commodity was delivered. If an equipment number is used to identify a vehicle or combination of vehicles, there shall be traceability to the registered vehicle license numbers through the weighmaster's records.
(j) The unit of measure, such as pounds, tons, gallons, kilograms, or cubic yards, used to identify the quantity.