EM-Tec PV64 SEM stage adapter M4 threaded top, brass. Compatible with Pemtron SMs PS-230 and PS-250.

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