Thanks to the kind collaboration of Lubomír Ondračka and Timothy Lubin, this is now available:
https://archive.org/details/reuter-the-srauta-sutra-of-drahyayana
REUTER The Śrauta-Sūtra of Drāhyāyaṇa : Reuter, J. N. : Free Download, Borrow, and Streaming : Internet Archive
द्राह्यायणश्रौतसूत्रम् [Drāhyāyaṇaśrautasūtram] = Śrauta-Sūtra of Drāhyāyaṇa with the commentary...
archive.org
Arlo Griffiths
