Apparatus, Testing, Spherical, Tested, A.P., Shell

Object Title

Apparatus, Testing, Spherical, Tested, A.P., Shell

Apparatus, Testing, Spherical, Tested, A.P., Shell

Date

16/12/1940

Reference

ENF 7/3/3 DD(E) 2697

Level

Item

Extent

1 drawing

Access Conditions

Open access

Reproduction Conditions

Crown Copyright