McGruer Hollow Spar Co
From Graces Guide
of Beach-street, Gosport
1924 Description of a wooden ladder bridge made for the 1924 Everest expedition. Designed by J. McLintock, the works manager of the McGruer Hollow Spar Company, Limited, in consultation with P. J. H. Unna, engineer to the expedition and constructed at the Company’s works, at Beach-street, Gosport. 'The McGruer system of hollow timber construction was originally introduced for the masts, booms and spars of yachts, but it has since been applied to aircraft construction and to other uses in which lightness combined with great strength to resist bending moment and compressive stresses are important considerations ....'[1]
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