Hitachi HV20 round SEM stage adapter assembly with M4 screw, compatible with S3500 series, S3000 series and S2000 series SEMs, aluminium/brass

Hitachi HV40 older style T-base SEM stage adapter assembly, compatible with S-4700, S-4500, S-4300, S-42300, S-4100, S-4000, S-800 FESEMs and S-3600N SEM