Title
Vacuum tube type 4MK8Catalog Number
102731001Type
Physical objectDescription
This is a vacuum tube, type 4MK8, manufacturer unknown, with 7 connector pins.Manufacturer
UnknownPlace Manufactured
U.S.AIdentifying Numbers
| Model number | 4MK8 | Printed on top of tube in gray |
| Other number | 31 13 29 | Printed on middle of tube in gray |
Dimensions
overall: 2 1/4 in x 5/8 inCategory
Component/vacuum tube