William Whittam of 25 Islington Street, Salford, Manchester (address in 1880), then Walkden, and now Fletcher Street, Bolton.
- 1860 Company established.
- 1884 Patented an internal gauge, being an improved form of telescopic gauge.[1]
- In 1886 their address was 188 Chapel Street, Salford.
- Now located in Bolton as Whittam Precision Rules [2]