| Description | Date | Identifier | |
| Test procedures and status report for engine units B.80 No.5 and No.1. | 15th Jun 1939 | Box 155 \ 2 scan0328 | |
| Test procedures and endurance specifications for various engine units. | 15th Jun 1939 | Box 155 \ 2 scan0329 | |
| Engine component testing and development plans for B.60 and B.80 units. | 15th Jun 1939 | Box 155 \ 2 scan0330 | |
| Programme of test bed work for a complete camshaft investigation on a unit. | 30th Jun 1939 | Box 155 \ 2 scan0331 | |
| Engine testing procedures for B.80 No.1 and No.4 units, including camshaft and crankshaft modifications. | 30th Jun 1939 | Box 155 \ 2 scan0332 | |
| Testing procedures and specifications for the W.III No.4 and Wraith Ripple No.2 engine units. | 30th Jun 1939 | Box 155 \ 2 scan0333 | |
| Test house instructions for various engine units, including crankshaft oscillation and blow-by tests. | 30th Jun 1939 | Box 155 \ 2 scan0334 | |
| Programme of test bed work for B.80 engine units, including modifications to camshafts, crankshafts, and pistons for the 'Cresta' unit. | 9th Aug 1939 | Box 155 \ 2 scan0335 | |
| Continued test procedures and specifications for engine units B.80 No.6 and B.80 No.4. | 9th Aug 1939 | Box 155 \ 2 scan0336 | |
| Progress report on engine units B.80 No.4, W.III No.4, and B.60 No.1, detailing tests and issues. | 9th Aug 1939 | Box 155 \ 2 scan0337 | |
| List of modifications and test instructions for B.60 No.1 and No.3 engine units. | 9th Aug 1939 | Box 155 \ 2 scan0338 | |
| Programme of test bed work for various B.80 and Wraith III engine units. | 21th Aug 1939 | Box 155 \ 2 scan0339 | |
| Continued memo on the B.60 No.3 engine, detailing modifications and tests for the head, valve springs, and camshaft. | 21th Aug 1939 | Box 155 \ 2 scan0340 | |
| Confirming the approval of an inspector for a test at the Clan Foundry. | 25th Aug 1940 | Box 155 \ 2 scan0341 | |
| Issues with an 8-cylinder engine, test procedures, and the rationalisation of 6-cylinder engine heads. | 9th Sep 1940 | Box 155 \ 2 scan0342 | |
| Experimental testing log for various aircraft engines, detailing tests and their status. | 19th Mar 1941 | Box 155 \ 2 scan0343 | |
| Requesting the dispatch of special 75 octane petrol left behind at the Test Beds. | 26th May 1941 | Box 155 \ 2 scan0344 | |
| Chassis test-bed programme for the Dual Induction System SCD.864. | 18th Jun 1941 | Box 155 \ 2 scan0345 | |
| Test plan and notes regarding throttle, air valve, and cam control adjustments. | 18th Jun 1941 | Box 155 \ 2 scan0346 | |
| Machine for testing helical springs seen at the Ford Motor Co. and suggesting obtaining details from Avery's. | 7th Sep 1933 | Box 155 \ 3 scan0001 | |
| Inquiry to Messrs Alfred Herbert Ltd. regarding the latest Fellows equipment for producing quiet helical gears. | 2nd Oct 1933 | Box 155 \ 3 scan0002 | |
| Letter from Alfred Herbert Ltd. regarding the latest Fellows equipment for producing quiet helical gears. | 4th Oct 1933 | Box 155 \ 3 scan0003 | |
| Letter from Alfred Herbert Ltd. regarding a Fellows Recess Type Gear Lapping Machine for producing silent gears. | 4th Oct 1933 | Box 155 \ 3 scan0004 | |
| Product specification and operating manual for a Gear-Tooth Burnishing Machine. | 4th Oct 1933 | Box 155 \ 3 scan0005 | |
| Operating instructions and specifications for a gear-tooth burnishing machine. | 1st Jan 1932 | Box 155 \ 3 scan0006 | |
| Brochure for the Fellows Gear Lapping Machine, 3-Lap Recess Type. | 1st Jan 1932 | Box 155 \ 3 scan0007 | |
| Detailed description of a 3-Lap Recess Type Gear Lapping Machine's mechanisms, operation, and adjustments. | 23th Oct 1933 | Box 155 \ 3 scan0008 | |
| Letter to Alfred Herbert Ltd. concerning equipment for producing quiet helical gears. | 23th Oct 1933 | Box 155 \ 3 scan0009 | |
| Letter from James Cochrane & Company regarding leaflets for 'Stroborama' and 'Stroboret' equipment. | 18th Dec 1933 | Box 155 \ 3 scan0010 | |
| Promotional leaflet for the STROBORAMA, Type A, a stroboscopic apparatus for examining quick-moving mechanisms. | 18th Dec 1933 | Box 155 \ 3 scan0011 | |
| Illustrating applications of the Strobodama, Type A, including its use on a locomotive and a Pelton wheel. | 18th Apr 1935 | Box 155 \ 3 scan0012 | |
| Request to order an Exhaust Gas Tester from the Cambridge Instrument Co. Ltd. | 18th Apr 1935 | Box 155 \ 3 scan0013 | |
| Letter from Cambridge Instrument Company providing a quotation for an Exhaust Gas Tester. | 12th Apr 1935 | Box 155 \ 3 scan0014 | |
| Promotional brochure for the Cambridge Exhaust Gas Tester, explaining the necessity of road tests for accurate carburettor adjustment. | 12th Apr 1935 | Box 155 \ 3 scan0015 | |
| Promotional leaflet for the Cambridge Exhaust Gas Tester, detailing its function and benefits for engine tuning. | 7th May 1935 | Box 155 \ 3 scan0016 | |
| The equipment required for experimental work on gears, including specifications for a new test house. | 7th May 1935 | Box 155 \ 3 scan0017 | |
| Comparison of electric motor drive versus petrol engine drive for a gearbox and rear axle test rig. | 7th May 1935 | Box 155 \ 3 scan0018 | |
| Specifications for gearbox and gear testing rigs and measuring apparatus. | 14th Aug 1935 | Box 155 \ 3 scan0019 | |
| To Mr. Peskett regarding the completion of parts for a new front engine suspension for unit J.12717. | 14th Aug 1935 | Box 155 \ 3 scan0020 | |
| Follow-up letter from C.F.R. Giesler Ltd. regarding literature on portable balancing equipment. | 27th Aug 1935 | Box 155 \ 3 scan0021 | |
| Research into gear silence, particularly for the Spectre gearbox, and the need for appropriate testing equipment. | 1st Oct 1935 | Box 155 \ 3 scan0022 | |
| Detailed list of equipment required for a radiator test rig. | 2nd Oct 1935 | Box 155 \ 3 scan0023 | |
| Proposal outlining the equipment and facility requirements for experimental work on gears. | 2nd Oct 1935 | Box 155 \ 3 scan0024 | |
| Equipment for a test rig, comparing electric motor drive with petrol engine drive. | 2nd Oct 1935 | Box 155 \ 3 scan0025 | |
| The specifications for various gearbox and gear testing rigs. | 2nd Oct 1935 | Box 155 \ 3 scan0026 | |
| Suggested arrangement for a gearbox and axle silence test rig driven by an electric motor. | 1st Jan 1947 | Box 155 \ 3 scan0027 | |
| Schematic for a suggested test rig arrangement for gearbox and axle silence testing, driven by petrol engines. | 1st Jan 1947 | Box 155 \ 3 scan0028 | |
| Layout and objections to a gearbox silence test rig using a slipping belt drive. | 2nd Oct 1935 | Box 155 \ 3 scan0029 | |
| Recommendation against using a specific type of rig due to unsuitability for prolonged running or accurate measurements. | 2nd Oct 1935 | Box 155 \ 3 scan0030 | |
| Diagram of a gearbox silence test rig with a differential belt drive. | 4th Oct 1935 | Box 155 \ 3 scan0031 | |
| Cover note confirming a conversation and accompanying a sketch showing the space required for a silence chamber. | 4th Oct 1935 | Box 155 \ 3 scan0032 | |
| Letter from the Experimental Department requesting to acquire a pressure greasing, tyre pumping and cellulose spraying unit. | 9th Nov 1935 | Box 155 \ 3 scan0033 | |
| Requesting the urgent completion of Shock Absorber Test Rig J.13235. | 11th Nov 1935 | Box 155 \ 3 scan0034 | |
| Letter from Joseph Bradbury & Sons, Ltd. enclosing a new catalogue of garage equipment. | 15th Nov 1935 | Box 155 \ 3 scan0035 | |
| Specification for new type G.E. Electric Brake Testers, types E - H. | 1st Oct 1935 | Box 155 \ 3 scan0036 | |
| Advertising leaflet for G.E. Electric Brake Tester models. | 16th Nov 1935 | Box 155 \ 3 scan0037 | |
| Advertisement leaflet from Joseph Bradbury & Sons, Ltd. for G.E. brake and drum servicing equipment. | 19th Dec 1935 | Box 155 \ 3 scan0038 | |
| Requesting an order to cover an invoice for a No.143 Valve Grinder. | 19th Dec 1935 | Box 155 \ 3 scan0039 | |
| Covering order for a No. 143 valve from Messrs V.L. Churchill. | 20th Dec 1935 | Box 155 \ 3 scan0040 | |
| Letter to W. & T. Avery, Ltd. regarding a requirement for weighing machines and a spring testing machine. | 11th Jan 1936 | Box 155 \ 3 scan0041 | |
| Letter from The Capac Company Ltd regarding a 14-day delay in dispatching Bin-Aural instruments for noise detection. | 13th Jan 1936 | Box 155 \ 3 scan0042 | |
| Requirement for a new spring testing machine capable of handling loads for Ph.III coil springs. | 14th Jan 1936 | Box 155 \ 3 scan0043 | |
| Request to engrave a cover for a very expensive instrument. | 16th Jan 1936 | Box 155 \ 3 scan0044 | |
| Required test apparatus, a Road Wheel Dynamometer and a Silence Chamber, for the new experimental shop layout. | 17th Jan 1936 | Box 155 \ 3 scan0045 | |
| Advice note from The Capac Company Ltd for bin-aural equipment used for detecting noise and wear in mechanisms. | 31th Jan 1936 | Box 155 \ 3 scan0046 | |
| Expired approval period for equipment from The Capac Co. Ltd., requesting either payment or return. | 14th Feb 1936 | Box 155 \ 3 scan0047 | |
| Return of a Bin-Aural instrument found to be of no use. | 17th Feb 1936 | Box 155 \ 3 scan0048 | |
| Requesting the return of a set of Bin-Aural Instruments, type B.G., to Capac Co. Ltd. as they were unsuitable. | 17th Feb 1936 | Box 155 \ 3 scan0049 | |
| Letter to The Capac Co. Ltd. returning a loaned B.G. Bin-Aural Instrument found to be of no help. | 17th Feb 1936 | Box 155 \ 3 scan0050 | |
| Letter from The Capac Company Ltd. regarding returned Bin-Aural noise detection equipment. | 18th Feb 1936 | Box 155 \ 3 scan0051 | |
| Letter to Messrs. Capac Ltd. regarding the unsatisfactory performance of a noise-identifying instrument. | 22th Feb 1936 | Box 155 \ 3 scan0052 | |
| Letter from The Capac Company Ltd. regarding Bin-Aural instruments (Tectoscopes) for noise detection. | 24th Feb 1936 | Box 155 \ 3 scan0053 | |
| Differing Durometer readings with Leyland & Birmingham Rubber Co. and proposing machine calibration. | 25th Feb 1936 | Box 155 \ 3 scan0054 | |
| Accuracy of a durometer testing instrument and refusing a request for it to leave the works. | 26th Feb 1936 | Box 155 \ 3 scan0055 | |
| Requesting modifications to a Trebel balancing machine to accommodate a Ph.III crank and flywheel. | 27th Feb 1936 | Box 155 \ 3 scan0056 | |
| The engine test bed, a change in policy, and a proposal to test a Pierce Arrow Straight '8' engine. | 23th Mar 1936 | Box 155 \ 3 scan0057 | |
| Letter to E.P. Barrus Ltd. requesting details and a demonstration of a new Stromberg tune-up service and instrument. | 25th May 1936 | Box 155 \ 3 scan0058 | |
| The disposition of test equipment in the Experimental Department, detailing issues with the garage and Cold Chamber. | 26th Mar 1936 | Box 155 \ 3 scan0059 | |
| Need for and status of various testing rigs and shop access. | 26th Mar 1936 | Box 155 \ 3 scan0060 | |
| Need for improved facilities in the No.5 Test House, similar to those in the Experimental Test House. | 26th Mar 1936 | Box 155 \ 3 scan0061 | |
| Requirements for weighing machines for suspension tests. | 26th Mar 1936 | Box 155 \ 3 scan0062 | |
| Letter from E. P. BARRUS LTD. regarding Stromberg Tune-Up and Motoscope engine testing equipment. | 27th May 1936 | Box 155 \ 3 scan0063 | |
| Letter from E.P. Barrus Ltd. regarding a demonstration of a Motoscope and Stromberg instrument. | 27th May 1936 | Box 155 \ 3 scan0064 | |
| Brochure for the Stromberg Motoscope, a new system for car tune-ups. | 27th May 1936 | Box 155 \ 3 scan0065 | |
| Brochure for the Stromberg Junior Mercury Vacameter and the Stromberg Motoscope 'C' engine testing outfit. | 27th May 1936 | Box 155 \ 3 scan0066 | |
| Promotional leaflet for Stromberg and Motoscope automotive analysers and testers. | 27th May 1936 | Box 155 \ 3 scan0067 | |
| Blank engine tune-up report form from a Stromberg 'Motoscope'. | 27th May 1936 | Box 155 \ 3 scan0068 | |
| Blank Stromberg 'Motoscope' engine tune-up report form for vehicle servicing. | 27th May 1936 | Box 155 \ 3 scan0069 | |
| Stromberg 'Motoscope' engine tune-up report form. | 27th May 1936 | Box 155 \ 3 scan0070 | |
| Stromberg 'Motoscope' engine tune-up report form. | 27th May 1936 | Box 155 \ 3 scan0071 | |
| Stromberg 'Motoscope' engine tune-up report form. | 27th May 1936 | Box 155 \ 3 scan0072 | |
| Blank Stromberg 'Motoscope' Engine Tune-Up Report form. | 27th May 1936 | Box 155 \ 3 scan0073 | |
| Blank Stromberg 'Motoscope' engine tune-up report form. | 30th May 1936 | Box 155 \ 3 scan0074 | |
| Letter to Messrs. E.P. Barrus Ltd. declining to proceed with an offered instrument. | 30th May 1936 | Box 155 \ 3 scan0075 | |
| Order for Selsyn equipment and a motor generator for chassis steering tests. | 4th Jun 1936 | Box 155 \ 3 scan0076 | |
| Request for the manufacture of two Ignition Cam Extractors for the Experimental Department's No.30 test bed. | 9th Jun 1936 | Box 155 \ 3 scan0077 | |
| Request addressed to Miss Austin to engrave a Galvanometer for the Experimental Department. | 12th Jun 1936 | Box 155 \ 3 scan0078 | |
| Night letter cablegram to Pioneer Instrument Company requesting a quotation for an Autosyn Transmitter and Receiver. | 26th Jun 1936 | Box 155 \ 3 scan0079 | |
| Deferred cable telegram confirming the price and delivery time for 'Autosyns' parts. | 29th Jun 1936 | Box 155 \ 3 scan0080 | |
| Letter to The Aerograph Co. Ltd. requesting a catalogue of their Spraying Guns. | 2nd Jul 1936 | Box 155 \ 3 scan0081 | |
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