Two self-marking Knife-edge Foucault testers
- maker:
- Horace Edward Dall
Two self-marking Knife-edge Foucault testers, plus microlens light source, bag of optical tubes, box of accessories, box of extending arms, box of "oddments"
Two self-marking Knife-edge Foucault testers, plus microlens light source, bag of optical tubes, box of accessories, box of extending arms, box of "oddments"
