= Low Level Measurements Handbook, Seventh Edition by Keithley Instruments
{c}
{tag=Work by Keithley Instruments}
{title2=Seventh edition}
https://www.tek.com/en/documents/product-article/keithley-low-level-measurements-handbook---7th-edition
Publisher-hosted primary handbook text verified through its indexed sections; direct opening returned403. Precise locators: §3.2.2, Figure3-4, reversing sources to cancel unchanged thermoelectric EMFs; §3.3.2, Figure3-18, current reversal and the requirement to finish sufficiently fast relative to changing thermal offsets. Corporate authorship/brand only; no individual author or publication year inferred.
https://www.tek.com/en/documents/product-article/keithley-low-level-measurements-handbook---7th-edition[§3.3.1, Lead Resistance and Four-Wire Method, Figure 3-16]: the two-wire method sends test current through the same leads used for the terminal potential-difference measurement, adding their resistance to the specimen reading. Verified in the publisher-indexed text; direct page access still returns 403. No new byline or edition year inferred.
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