The following exposure meters were designed for and require a 625 mercury cell:
Manufacturer/Brand Model Aetna/Maxwell D1, D3, L1 Bewi Super L Bolex Exposure meter for H8/H16 reflex/non-reflex models Capitol D1, D3, L1 Dot Line DL0016, DL0017 Gossen Super Pilot Cds/SBC, Luna Pro Cds, Luna Six-3 (2 each), C-Mate Cds, N-100 Horseman 4x5 film-plane meter (4 each) Leitz MR3, MR4 Minolta Flash Meter, Color Meter (5 each) Miranda External Meters F/G, Cadius II, TTP clip-on Pentax Clip-On Meter Prinz 160-117 DX-1 Sectra TriColor meter Sekonic 164A, 164B, 164C Soligor UF II, Selector Cds Vivitar 34