DVD Video Test Disc Standard Disc( for design ) Standard Disc ( for production ) Region Test Disc 8cm Test Disc Ageing Disc Glass Test Disc DVD Audio Test Disc DVD-ROM Test Disc DVD-Video Special Test Disc DVD-RW Test Disc Prerecorded DVD-RW Test Disc Prerecorded DVD-R Test Disc CD Test Disc CD-R/RW Test Disc Digital Video Test Tape Analog Video Test Tape Audio Cassette Test Tape Others Contact us Japanese   DVD Video Test Disc This test disc is planned for DVD pickup adjustment Model Disc Type Main features VT-502G19F Single Layer Glass/P.C. Laminated Disc (t=1.9mm) 12cm V-506G19F Glass/P.C. Laminated Disc (t=1.9mm) 8cm V-GH01 Combination Glass Laminated Disc (in:CD, out:DVD) V-GD01 Single Layer Glass Laminated Disc (DVD) < Main Features > This disc uses a three-layer structure with a glass substrate as the middle layer to secure a stable tilt angle variation over the entire surface. DVD substrate (VT-502) + glass substrate + dummy substrate. ( Total thickness 1.9mm, weight 34g ) VT-502G19F Structure