Would this one test cyl pressure on a 300SD?

Would this tester, with the supplied adapter, check a 1985 300SD (the 5-cyl engine)?
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&itemE38674320&sspagename ME%3AB%3AWN%3AMT%3A1

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Looks like it should do the job.
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