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 V10 Vertical Gear Generator. Sales and Technical Specification Catalogue. 8 pages. 

Sykes V10 Vertical Gear Generator: Operator's Instruction Manual. Includes a copy of the maker's comprehensive Sales & Technical Specification Catalogue.