Revised sphere-gap spark-over voltages

THE subcommittee of the A.I.E.E. committee on instruments and measurements that has been working for the past 2 years on a revision of the sphere-gap spark-over voltages which are published in A.I.E.E. Standard Number 4 has completed the revision of values for the sphere gap settings. These are published herewith to enable anyone so desiring to make use of these values pending completion of a revision of the text of A.I.E.E. Standard No. 4 at which time they will be included in the revised standard. It is intended that no further change will be made in the values in the meantime.