SYKES Gear Generating Machinery. Early Full-range Cataloguetest timer giving useful details of the following models: 1a, 2c, 3c, 4c, 5c and V.10.

SYKES 1A, 3C and 5E Gear Generating Machines. Detailed Catalogue with General Principles of Operation, Design Features, Practical Applications and Technical Specifications
Booklet. 8 pages.

SYKES 1A Horizontal Gear Generator: Operator's Instruction and Maintenance Manual with Parts as useful Sectional Drawings (these have been enlarged to A3 and duplicated in the back of the publication). Two manuals are included: one early, the other late together with a Sales & Technical Specification Sheet.