2 x e/m deflection tubes. 2 x critical potential tubes 1 x triode 2 x fine beam tubes 1 x Perrin tube 1 x maltese cross tube. May have instruction booklets for them. Have not tested any of the above; will only do so if interest is shown. £200 each, buyer arranges transport/postage. Discount for bulk orders. I will be in London evening of 10th November.