Cooke, Troughton & Simms

Cooke, Troughton & Simms Theodolite

Cooke, Troughton & Simms was a British instrument-making firm formed in 1922 by the merger of T. Cooke & Sons and Troughton & Simms.

In 1938 its telescope-making business was acquired by Sir Howard Grubb, Parsons and Co. Ltd.

References

• Formation of the company by merger: Obs 45 (1922) 403
• Acquisition of telescope-making business: JRASC 32 (1938) 363
• Clarification that only telescope-making business was acquired: JRASC 32 (1938) 399