Sommerson’s

This type of Hand Point Lever was in common use in the early 1900’s and perhaps earlier. The operating mechanism was simple and non-locking.

These types of lever were still in operation around the system as late as the 1940s.

Ref: South Western Circular Volume 12, No.7, July 2002. Can be obtained from British Library (and any other library) under ref ISSN 0309 - 5053.

(4mm Point lever Sommerson’s pictured below)