Typed letter to R. J. Bartle, Esq., from D. O'Connor, Engineer and ?, Chief Engineer, of the National Roads and Motorists Association (N.S.W.) dated November 8, 1936. Letter mentions four tests done in a car over a stretch of ground to measure fuel consumption. Tests were done with and without the device installed in the fuel system. Paper has printed letterhead and the names of the President, Vice-Presidents, Hon Treasurer, Council and Secretary with the AAA and NRMA emblems on the left side of the page.sciences, instruments - general, scalebuoy, bill ashman collection - correspondence, national roads & motorists' association (n.s.w.), n.r.m.a. house, australian automobile association, r j bartle esq, hon j c watson, hon g r w mcdonald, charles ludowici esq, alderman james mcmahon, j bryden brown esq, d m cooper esq, e h cowdery esq, c r davidson esq, hon j m dunningham mla, a m graham esq, a s lumby esq, rev father w nicol, dr harold norrie, dr f antill pockley, ald h l primrose mla, a e rudder esq, lt-col g c somerville cmg dso, major blair wark vc dso, g a l wilson mla, h i johnson fiis, d o'connor?