small wooden box with three plastic terminals, one big black switch and a screen with a scale from 0 to 0.5 amperes. One connecting screw on each end and a plaque with NEUTRALISING UNIT REF NO IOA/8475
Cardboard box of 12 small test tubes and a sterile syringe needle. Hand written on box: "Nernst Filaments for Grubb Parsons D.B.3 Double beam Radiation unit, Serial no. 18". For use with Grubb Parson Spectrophotometer (ABDNP200616a)