It looks like the digitized manuscript of the Oblongus is not available remotely:
https://catalogue.leidenuniv.nl/permalink/31UKB_LEU/18s393l/alma990037160190302711
Manuscript References
-
Lucrezio: immagini di manoscritti
O = Oblongus, codex Leidensis Vossianus 30, saec. IX in. (UB Leiden, VLF 30)
Q = Quadratus, codex Leidensis Vossianus 94, saec. IX ex. (UB Leiden, VLQ 94)
G = schedae Gottorpienses vel Haunienses, saec. IX (Copenhagen, Det Kongelige Bibliotek, GKS 211, 2°)
GKS 211 2°: Lucretius, De rerum natura
L = Laurentianus 35,30 Niccolanianus (Firenze, Biblioteca Medicea Laurenziana)
Codici Laurenziani [sigle di Flores: plut. 35,25 (D); 35,26 (E); 35,27 (H); 35,28 (R); 35,29 (S); 35,30 (L); 35,31 (F); 35,32 (T); 53,01]: cerca in Teca Digitale.
I = Monacensis Latinus 816a (codex Victorianus) ante 1475 (BSB Monaco)
https://www.e-periodica.ch/cntmng?pid=mhl-001%3A1973%3A30%3A%3A196
