Enter the tool name, for example, NIH Stroke Scale, or your topic, for example, stroke, in the search box. When looking for a tool by name, make sure to enter all possible ways of naming it, for example, National Institutes of Health Stroke Scale OR NIH Stroke Scale OR NIHSS.
On the second search line, type in Research Instrument, and select PT Publication Type from the dropdown list to the right of the search.
Use the link above to open APA PSycINFO
change the dropdown from "Select a Field" to "TM Tests & Measures"
OR
Use the "Tests & Measures" search box in the lower right of the "Limit your results" advanced search area.