Practice Test Geeks(CST) Certified Scale Technicians Practice Test
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Regulatory Compliance & Safety Standards Flashcards

7 cards from real CST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Under NIST Handbook 44, what is the maximum permissible error (MPE) for a Class III commercial scale at its test load?

    Answer: 1 scale division

    NIST HB 44 specifies that Class III devices have an MPE of 1 scale division (d) for loads up to 500d, and 2d for loads from 500d to 2000d.

  2. Which federal agency has primary authority over commercial weighing and measuring devices used in interstate commerce?

    Answer: NIST

    NIST (National Institute of Standards and Technology) sets national standards for weights and measures through its Office of Weights and Measures.

  3. A scale technician is asked to place a device 'out of service.' Which action is the correct procedure?

    Answer: Attach an official rejection tag and notify the weights and measures authority

    Rejected devices must be tagged with an official rejection notice and the appropriate weights and measures jurisdiction must be notified per standard enforcement procedures.

  4. What does the term 'traceability' mean in the context of scale calibration?

    Answer: An unbroken chain of comparisons linking measurements to national or international standards

    Traceability means calibration can be verified through an unbroken, documented chain of comparisons back to NIST or an equivalent national measurement institute.

  5. Which OSHA standard most directly governs electrical safety practices a scale technician must follow when servicing powered weighing equipment?

    Answer: 29 CFR 1910.147 (Lockout/Tagout)

    29 CFR 1910.147, the Control of Hazardous Energy (Lockout/Tagout) standard, requires de-energizing equipment before servicing to prevent unexpected startup.

  6. A retail grocery scale must display the price per unit, quantity, and total price simultaneously. Which regulatory document establishes this requirement?

    Answer: NIST HB 44, Section 3.30

    NIST HB 44 Section 3.30 covers computing scales and specifies the simultaneous display requirements for unit price, net weight, and total price.

  7. What is the primary purpose of a 'Certificate of Conformance' issued for a type-approved weighing device?

    Answer: It confirms the device model meets NIST HB 44 requirements and may be used commercially

    A Certificate of Conformance from NCWM indicates that the device type has been evaluated and found to meet the requirements of NIST HB 44 for commercial use.