| Description | Date | Identifier | |
| Dispatch of steering and roller parts to Messrs. Ransome & Marles for grinding operations. | 1st Oct 1936 | Box 153 \ 2 scan0116 | |
| Letter to a supplier regarding excessive grinding allowance on supplied rollers. | 2nd Oct 1936 | Box 153 \ 2 scan0117 | |
| Request to send 25/30 HP steering rollers and a half section to Adamant Engineering Co. Ltd. | 2nd Oct 1936 | Box 153 \ 2 scan0118 | |
| Letter from Adamant Engineering Co. Ltd. acknowledging receipt of rollers for examination and a planned visit by Mr. Robotham. | 5th Oct 1936 | Box 153 \ 2 scan0119 | |
| Letter from British Timken regarding a works visit policy and arranging a meeting at the Motor Exhibition. | 6th Oct 1936 | Box 153 \ 2 scan0120 | |
| Letter to Adamant Engineering Co. Ltd. arranging a meeting to discuss steerings. | 7th Oct 1936 | Box 153 \ 2 scan0121 | |
| Letter from Adamant Engineering Co. Ltd. to Mr. Hardy regarding an error in the grinding allowance on rollers. | 7th Oct 1936 | Box 153 \ 2 scan0122 | |
| Letter from Adamant Engineering Co. Ltd. regarding the inspection and return of rollers with a noted deficiency. | 7th Oct 1936 | Box 153 \ 2 scan0123 | |
| Letter from a bearing manufacturer confirming a drawing alteration and the dispatch of parts. | 8th Oct 1936 | Box 153 \ 2 scan0124 | |
| Letter from Adamant Engineering Co. Ltd. to Mr. W. A. Robotham confirming a meeting. | 8th Oct 1936 | Box 153 \ 2 scan0125 | |
| Letter to a supplier confirming an order for 100 steering roller assemblies. | 14th Oct 1936 | Box 153 \ 2 scan0126 | |
| Letter concerning the supply of bar steel for rollers and requesting a quotation. | 14th Oct 1936 | Box 153 \ 2 scan0127 | |
| Letter from a bearing manufacturer regarding drawing modifications and a quotation for steering gear roller sets. | 13th Oct 1936 | Box 153 \ 2 scan0128 | |
| Quotation from Ransome & Marles Bearing Co. for steering cam roller assemblies. | 13th Oct 1936 | Box 153 \ 2 scan0129 | |
| Letter from Adamant Engineering Company regarding the chemical analysis and heat treatment of Nickel Chrome Case Hardening Steel. | 14th Oct 1936 | Box 153 \ 2 scan0130 | |
| Letter from Adamant Engineering Company detailing a heat treatment process. | 14th Oct 1936 | Box 153 \ 2 scan0131 | |
| Confirming arrangements for manufacturing 100 sets of roller followers for the 25/30 HP steering system. | 15th Oct 1936 | Box 153 \ 2 scan0132 | |
| Agreement to transfer the production of the follower roller for the 25/30 HP chassis Marles steering gear to Ransome & Marles' Works. | 15th Oct 1936 | Box 153 \ 2 scan0133 | |
| Letter to Adamant Engineering Co. Ltd. requesting steel composition and heat treatment details for follower roller F.61281/2. | 15th Oct 1936 | Box 153 \ 2 scan0134 | |
| Letter to Ransome & Marles Bearing Co. Ltd. requesting a quotation for steering roller assemblies. | 15th Oct 1936 | Box 153 \ 2 scan0135 | |
| Material specification sheet detailing chemical composition and heat treatment procedures. | 15th Oct 1936 | Box 153 \ 2 scan0136 | |
| Letter to Adamant Engineering regarding the production and material treatment for a follower roller on the 25/30 HP Chassis & Marles Steering. | 15th Oct 1936 | Box 153 \ 2 scan0137 | |
| Letter from a bearing manufacturer regarding a quotation and materials for special steering roller assemblies. | 17th Oct 1936 | Box 153 \ 2 scan0138 | |
| Page two of a letter from Ransome & Marles Bearing Co., Ltd. requesting further data. | 17th Oct 1936 | Box 153 \ 2 scan0139 | |
| Letter to Adamant Engineering Co. Ltd. concerning the settlement for a balance of 25/30 steering follower rollers. | 20th Oct 1936 | Box 153 \ 2 scan0140 | |
| Letter detailing the composition and heat treatment for nickel-chrome cast hardening steel, and a disagreement with the final tempering process. | 21th Oct 1936 | Box 153 \ 2 scan0141 | |
| Recommendation for final tempering temperatures and duration. | 21th Oct 1936 | Box 153 \ 2 scan0142 | |
| Letter to a bearing supplier detailing modifications and past faults on inner races. | 22th Oct 1936 | Box 153 \ 2 scan0143 | |
| Page 2 of a letter detailing technical faults found in a roller component. | 25th May 1936 | Box 153 \ 2 scan0144 | |
| General arrangement of a Marles R.H. 1 7/16 type steering gear. | 25th May 1936 | Box 153 \ 2 scan0145 | |
| Letter to The Ransome & Marles Bearing Co. Ltd. regarding the supply of follower rollers and inner races for the 25/30 HP Chassis steering gear. | 27th Oct 1936 | Box 153 \ 2 scan0146 | |
| Letter to Adamant Engineering Co. Ltd. regarding a supply shortage of follower rollers for the 25/30 HP steering system. | 27th Oct 1936 | Box 153 \ 2 scan0147 | |
| Letter to Adamant Engineering Co. Ltd. regarding supply arrangements for 25/30 HP steering followers. | 28th Oct 1936 | Box 153 \ 2 scan0148 | |
| Requesting the dispatch of experimental Bentley steering gear parts for rectification. | 29th Oct 1936 | Box 153 \ 2 scan0149 | |
| Letter to The Adamant Engineering Co. Ltd. regarding the examination of fractured parts from a Marles gear. | 29th Oct 1936 | Box 153 \ 2 scan0150 | |
| Faults found with a rockershaft roller, its bearings, and races. | 30th Oct 1936 | Box 153 \ 2 scan0151 | |
| Requesting an examination of a fractured steering roller from a Bentley, including its material specification. | 30th Oct 1936 | Box 153 \ 2 scan0152 | |
| Issues and alternative methods for fixing Marles steering cams to tubes. | 30th Oct 1936 | Box 153 \ 2 scan0153 | |
| Analysis of a broken steering roller from The Adamant Engineering Co., finding it was not made from case hardening steel. | 31th Oct 1936 | Box 153 \ 2 scan0154 | |
| Letter to Adamant Engineering Co. Ltd. regarding a chemist's report on a roller from a Marles steering system. | 2nd Nov 1936 | Box 153 \ 2 scan0155 | |
| Examination of a broken steering roller from the Adamant Engineering Co. to determine its material composition. | 31th Oct 1936 | Box 153 \ 2 scan0156 | |
| Letter from Vauxhall Motors clarifying a misunderstanding regarding their intention to license and manufacture Marles Steering Gear. | 4th Nov 1936 | Box 153 \ 2 scan0157 | |
| Letter to a bearing company discussing issues with steering roller parts, including dimensions, materials, and heat treatment. | 4th Nov 1936 | Box 153 \ 2 scan0158 | |
| Letter to a bearing company about the heat treatment and material specifications for steel rollers. | 4th Nov 1936 | Box 153 \ 2 scan0159 | |
| Letter to Ransome & Marles Bearing Co. regarding issues with steering roller parts for the 25/30 HP chassis. | 4th Nov 1936 | Box 153 \ 2 scan0160 | |
| Letter to a bearing company detailing heat treatment instructions and proposing a change in steel specification for rollers. | 4th Nov 1936 | Box 153 \ 2 scan0161 | |
| Request for a report on a steering column from chassis GUL-41, which was returned from Cricklewood for testing. | 5th Nov 1936 | Box 153 \ 2 scan0162 | |
| Correspondence from Adamant Engineering Company apologising for a mistake in the type of steel used for a broken roller. | 5th Nov 1936 | Box 153 \ 2 scan0163 | |
| Letter from Adamant Engineering Company regarding a manufacturing error on a broken Roller for a Bentley Steering system. | 5th Nov 1936 | Box 153 \ 2 scan0164 | |
| Letter from Adamant Engineering Company clarifying a production error with rollers and discussing case-hardening procedures. | 5th Nov 1936 | Box 153 \ 2 scan0165 | |
| Quotation and material supply for steering rollers for the 25/30 HP chassis. | 5th Nov 1936 | Box 153 \ 2 scan0166 | |
| Letter from Ransome & Marles Bearing Co. Ltd. regarding a quotation for 25/30 HP Chassis Steering Rollers. | 4th Nov 1936 | Box 153 \ 2 scan0167 | |
| Letter from Ransome & Marles Bearing Co, Ltd. regarding the supply and delivery of inner rings and distance pieces. | 4th Nov 1936 | Box 153 \ 2 scan0168 | |
| Quotation for the supply and modification of bearing components. | 5th Nov 1936 | Box 153 \ 2 scan0169 | |
| Letter to Ransome & Marles Bearing Co. Ltd. discussing production, materials, and arrangements for steering rollers on the 25/30 HP chassis. | 5th Nov 1936 | Box 153 \ 2 scan0170 | |
| Letter to Ransome & Marles Bearing Co. Ltd. regarding the supply of S.82 material. | 5th Nov 1936 | Box 153 \ 2 scan0171 | |
| Letter to Ransome & Marles Bearing Co. Ltd. regarding the heat treatment of follower rollers for the 25/30 HP chassis steering gear. | 9th Nov 1936 | Box 153 \ 2 scan0172 | |
| Letter to Ransome & Marles Bearing Co. Ltd. discussing carburising temperatures for parts. | 9th Nov 1936 | Box 153 \ 2 scan0173 | |
| Letter from Adamant Engineering Company regarding the return of a rectified Rocker Shaft and Roller Assembly for a Bentley Car. | 9th Nov 1936 | Box 153 \ 2 scan0174 | |
| The circulation of a report on the steering of chassis GUL-41. | 9th Nov 1936 | Box 153 \ 2 scan0175 | |
| Letter to a bearing company regarding the manufacture of steering rollers and a proposal for a suitable ball bearing. | 11th Nov 1936 | Box 153 \ 2 scan0176 | |
| Confirming that Roy was instructed to issue an official order for steel. | 12th Nov 1936 | Box 153 \ 2 scan0177 | |
| Letter from Adamant Engineering Company regarding Cam and Roller drawings and backlash. | 14th Nov 1936 | Box 153 \ 2 scan0178 | |
| Letter from Adamant Engineering Company, Limited regarding the checking of a new gear. | 14th Nov 1936 | Box 153 \ 2 scan0179 | |
| Letter to Adamant Engineering Co. Ltd. regarding a backlash issue on a 25/30 HP roller. | 16th Nov 1936 | Box 153 \ 2 scan0180 | |
| Official order for two steering cams from The Adamant Engineering Co. Ltd. | 16th Nov 1936 | Box 153 \ 2 scan0181 | |
| Letter from a bearing manufacturer regarding the design of follower rollers for a 25/30 HP chassis steering gear. | 17th Nov 1936 | Box 153 \ 2 scan0182 | |
| Request for particulars of an instruction to prepare special 25/30 HP Cams in order to place an official order. | 17th Nov 1936 | Box 153 \ 2 scan0183 | |
| Rm/FJH to Roy stating that requested information has already been supplied. | 18th Nov 1936 | Box 153 \ 2 scan0184 | |
| Letter from British Timken regarding a loaned taper plug gauge and its modification. | 18th Nov 1936 | Box 153 \ 2 scan0185 | |
| Letter from Adamant Engineering discussing a backlash issue on the 25/30 HP Roller. | 18th Nov 1936 | Box 153 \ 2 scan0186 | |
| Sending various steering parts to the Adamant Engineering Co. for examination and rectification. | 20th Nov 1936 | Box 153 \ 2 scan0187 | |
| Letter to Adamant Engineering regarding backlash and contact issues on 25/30 HP cams and rollers, including a diagram. | 20th Nov 1936 | Box 153 \ 2 scan0188 | |
| Letter discussing issues with supplied cams and rollers, delays in rectification, and an urgent request for parts. | 24th Nov 1936 | Box 153 \ 2 scan0189 | |
| Letter from a bearing manufacturer advising of a four-week manufacturing delay for an order of three bearings. | 24th Nov 1936 | Box 153 \ 2 scan0190 | |
| Pendulum lever be sent to Adamant Engineering Co.Ltd. to have splines cut. | 26th Nov 1936 | Box 153 \ 2 scan0191 | |
| Letter to The Adamant Engineering Co. Ltd. regarding work on a pendulum lever and chasing outstanding parts. | 26th Nov 1936 | Box 153 \ 2 scan0192 | |
| Issue with a steering gear adjustment and its resolution. | 25th Nov 1936 | Box 153 \ 2 scan0193 | |
| Setup and standardisation of Phantom III and 25/30 steering gears. | 23th Nov 1936 | Box 153 \ 2 scan0194 | |
| Letter from Adamant Engineering Co. Ltd. acknowledging a communication and providing a status update on the production of parts. | 27th Nov 1936 | Box 153 \ 2 scan0195 | |
| Difficulties experienced with the Adamant Co. in maintaining quality and quantity of Marles type steering components. | 30th Nov 1936 | Box 153 \ 2 scan0196 | |
| Ongoing troubles with Marles type steering, including supplier issues and quality control rejections. | 28th Nov 1936 | Box 153 \ 2 scan0197 | |
| Pre-load on rockershaft bearings for model steering and proposing further testing. | 1st Dec 1936 | Box 153 \ 2 scan0198 | |
| Letter from the Experimental Department chasing an overdue order for experimental steering rollers. | 9th Dec 1936 | Box 153 \ 2 scan0199 | |
| Letter from Ransome & Marles Bearing Co. regarding a special bearing for experimental purposes. | 9th Dec 1936 | Box 153 \ 2 scan0200 | |
| Letter from Adamant Engineering Company regarding the supply and status of Cams and Rollers for steering gears. | 10th Dec 1936 | Box 153 \ 2 scan0201 | |
| Page two of a letter from Adamant Engineering Co. Ltd. concerning the rectification and replacement of Cams. | 10th Dec 1936 | Box 153 \ 2 scan0202 | |
| Letter from Adamant Engineering regarding an emergency order for a special roller cam. | 11th Dec 1936 | Box 153 \ 2 scan0203 | |
| Request to the Works to correct a Marles steering gear by regrinding the roller races. | 11th Dec 1936 | Box 153 \ 2 scan0204 | |
| Letter from Ransome & Marles Bearing Co. Ltd. regarding a delivery delay on an order for rollers. | 11th Dec 1936 | Box 153 \ 2 scan0205 | |
| Letter to Adamant Engineering Co. Ltd. discussing manufacturing methods and issues for steering cams. | 12th Dec 1936 | Box 153 \ 2 scan0206 | |
| Letter to Adamant Engineering Co. Ltd. regarding faults and eccentricity found in supplied cams, detailing tests and suggesting corrective actions. | 12th Dec 1936 | Box 153 \ 2 scan0207 | |
| Letter from Adamant Engineering Company, Ltd. regarding issues found with a skeleton steering gear during testing. | 14th Dec 1936 | Box 153 \ 2 scan0208 | |
| Letter from Adamant Engineering Company confirming the correct operation of a lower ratio cam assembly. | 14th Dec 1936 | Box 153 \ 2 scan0209 | |
| The price increase for Marles Steering Cams from the Adamant Company and intelligence that Vauxhall may be switching suppliers. | 15th Dec 1936 | Box 153 \ 2 scan0210 | |
| Letter from Adamant Engineering Company about being unable to establish the cause of incorrect contacting between a Roller and Cam, and sending replacements. | 15th Dec 1936 | Box 153 \ 2 scan0211 | |
| Letter from Adamant Engineering Company regarding the mating of a Roller and a Cam. | 15th Dec 1936 | Box 153 \ 2 scan0212 | |
| Inaccuracies in the production of steering cams by Adamant Co. and proposed modifications. | 16th Dec 1936 | Box 153 \ 2 scan0213 | |
| Letter from Adamant Engineering Company regarding the investigation and testing of steering cams. | 14th Dec 1936 | Box 153 \ 2 scan0214 | |
| Letter confirming the urgent dispatch of a spare Experimental Roller. | 17th Dec 1936 | Box 153 \ 2 scan0215 | |
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