Rolls-Royce Archives
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
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Confirming the use of Elliott ammeters for 40/50 HP and 20 HP chassis, and for future P.2 series orders.12th Dec 1927Box 168 \ 5  img125
Query regarding the potential damage to an ammeter from being overloaded by two Smith cigar lighters.18th Jan 1928Box 168 \ 5  img126
From EFC to Roy regarding a faulty Weston ammeter from an experimental car to be returned for repair.26th Jan 1928Box 168 \ 5  img127
Required overload specifications for a chassis ammeter, specifically its ability to withstand 90 amperes.25th Jan 1928Box 168 \ 5  img128
The defects and free-of-charge repair of a model 301 Ammeter returned to Weston Electrical Instrument Co. Ltd.3rd Feb 1928Box 168 \ 5  img129
Quoting correspondence from Ferranti Limited regarding the supply of a dashboard ammeter.23th Jul 1928Box 168 \ 5  img130
Low-reading Elliott ammeter on a 20 HP chassis, proposing to test stock ammeters for a replacement.25th Jul 1928Box 168 \ 5  img131
Faulty Ferranti Ammeter that needs returning to the maker due to a sticking needle.26th Jul 1928Box 168 \ 5  img132
Letter from Ferranti Ltd regarding the testing of a Dashboard Ammeter with a reported sticking needle.1st Aug 1928Box 168 \ 5  img133
Instructions to add an insulation test to the specification for a standard chassis ammeter, type MR no 155254.10th Aug 1928Box 168 \ 5  img134
Faulty Elliott ammeter that requires returning for rectification.14th Aug 1928Box 168 \ 5  img135
Return of an unsatisfactory Elliott Ammeter for rectification.16th Aug 1928Box 168 \ 5  img136
Letter to Ferranti Ltd. regarding a faulty dashboard ammeter with a sticking needle.18th Aug 1928Box 168 \ 5  img137
Letter from supplier Elliott Brothers regarding a damaged ammeter returned for inspection.21th Aug 1928Box 168 \ 5  img138
Letter from Ferranti Ltd. concerning tests on dashboard ammeters for sticktion.22th Aug 1928Box 168 \ 5  img139
The decision not to have an Elliott Ammeter repaired.27th Aug 1928Box 168 \ 5  img140
The test progress for a Ferranti ammeter instrument for a chassis.4th Sep 1928Box 168 \ 5  img141
Following up on a sticking Ferranti chassis ammeter that has been returned but not yet received back.5th Sep 1928Box 168 \ 5  img142
Instruction sheet detailing the test results for a viscometer instrument.21th Sep 1928Box 168 \ 5  img143
Requesting the installation of a tested Ferranti chassis type ammeter on vehicle 9-EX.22th Sep 1928Box 168 \ 5  img144
Letter from Ferranti Ltd. following up on the test results for a submitted dashboard instrument.15th Nov 1928Box 168 \ 5  img145
Instructions regarding a car test, noting mileage and referencing a previous report.19th Nov 1928Box 168 \ 5  img146
Brief report on the testing of a Ferranti Ammeter on an experimental car.20th Nov 1928Box 168 \ 5  img147
Requesting arrangements for a Weston ammeter to be returned to the makers for repair.19th Dec 1928Box 168 \ 5  img148
Performance review of Park Royal and Ferranti ammeters on experimental cars.13th Feb 1929Box 168 \ 5  img149
Faulty Weston ammeter being returned to the makers for correction.12th Mar 1929Box 168 \ 5  img150
Instructions detailing a successful electrical load test on a chassis lighting switch and ammeter.20th Mar 1917Box 168 \ 5  img151
Note regarding ammeter overload testing.28th Mar 1929Box 168 \ 5  img152
White metal bearing.5th Jan 1921Box 168 \ 5  img153
Request to exchange a Ferranti ammeter between chassis 9-X and 12-X to accumulate more mileage.1st Jul 1929Box 168 \ 5  img154
Damaged Ferranti ammeter to be returned to the makers for repair and potential improvement.11th Jul 1929Box 168 \ 5  img155
Recommendation to procure six Ferranti chassis ammeters for comparison against existing instruments.9th Sep 1929Box 168 \ 5  img156
Chasing the repair status of an experimental Ferranti Ammeter.8th Sep 1929Box 168 \ 5  img157
Test report on a repaired Ferranti Ammeter and its suitability for car 14.G.I.1st Oct 1929Box 168 \ 5  img158
Fitting of a repaired Ferranti ammeter to experimental chassis 14-G4.1st Oct 1929Box 168 \ 5  img159
The overload testing of a standard Elliott Ammeter with a 30SWG fuse.9th Oct 1929Box 168 \ 5  img160
Page two of a test report on an ammeter's resilience to a short circuit when protected by a fuse.31th Oct 1929Box 168 \ 5  img161
Notice about the fitting of a Ferranti ammeter to 14-G4.31th Oct 1929Box 168 \ 5  img162
Elliott Ammeters and the grouped instrument board assembly.2nd Nov 1929Box 168 \ 5  img163
Dust contamination issues during instrument board assembly, specifically affecting the Elliott ammeter.8th Nov 1929Box 168 \ 5  img164
Continued discussion on rectifying faulty instruments and determining responsibility.14th Nov 1929Box 168 \ 5  img165
Confirming the satisfactory arrangement for the assembly of instruments, referencing earlier memos.14th Nov 1929Box 168 \ 5  img166
Testing and procuring Park Royal Co. chassis ammeters.27th Nov 1929Box 168 \ 5  img167
The testing and comparison of Ferranti and Park Royal chassis ammeters.31th Jan 1929Box 168 \ 5  img168
Quotation for six sample Ferranti chassis ammeters.12th Dec 1929Box 168 \ 5  img169
Letter from Ferranti Ltd. to Mr. Fowler Clark regarding dashboard instruments and an order for Chokes and Resistances.7th Dec 1929Box 168 \ 5  img170
Letter to Ferranti Ltd. regarding the performance and construction of dashboard ammeters.10th Dec 1929Box 168 \ 5  img171
Letter from Ferranti Ltd regarding complaints of sticking instruments due to foreign matter in the magnet gap.11th Dec 1929Box 168 \ 5  img172
Specification for the production inspection and testing of a chassis ammeter.3rd Jan 1930Box 168 \ 5  img173
The testing and suggested improvements for Ferranti Ammeters Type B.S.I.13th Feb 1930Box 168 \ 5  img174
Test report on the satisfactory performance of five instruments regarding damping, accuracy, and overload.14th Feb 1930Box 168 \ 5  img175
Letter to Ferranti Ltd. providing feedback on the design, finish, and performance of sample chassis ammeters.14th Feb 1930Box 168 \ 5  img176
Instruction to fit a Ferranti ammeter type B.S.1 to a 20 HP chassis 12-CIV.4th Feb 1930Box 168 \ 5  img177
Replacement of Ferranti ammeters on chassis 14-EX and 17-G4.8th Feb 1930Box 168 \ 5  img178
Letter from Ferranti Ltd. regarding a query about the shape of ammeter pointers.18th Feb 1930Box 168 \ 5  img179
Letter from Ferranti Ltd. confirming design modifications to five sample instruments based on feedback.19th Feb 1930Box 168 \ 5  img180
Extract from Mr. Hancock's report on 14-GIV after 14,000 miles.5th Apr 1930Box 168 \ 5  img181
Instruction to fit a Ferranti ammeter No.32356 to experimental chassis 16-C4.8th Apr 1930Box 168 \ 5  img182
The mileage recorded by Ferranti and Park Royal ammeters on various car chassis.2nd Jun 1930Box 168 \ 5  img183
Standardization of either the Ferranti or Park Royal ammeter.4th Jun 1930Box 168 \ 5  img184
Recommending Ferranti over Park Royal as the supplier for Ammeters, based on their technical, commercial, and financial standing.28th Jun 1930Box 168 \ 5  img185
Notification of a Ferranti ammeter allotted for chassis 18-GIV.23th Jun 1930Box 168 \ 5  img186
Standardisation proposal to approve the Ferranti ammeter as an alternative British-sourced part to the existing Elliott ammeter.25th Jun 1930Box 168 \ 5  img187
The comparative testing and subsequent standardisation of Ferranti ammeters.1st Jul 1930Box 168 \ 5  img188
Standardisation of ammeters for the 40/50 HP and 20/25 HP chassis.1st Jul 1930Box 168 \ 5  img189
Ordering Ferranti ammeters as an alternative to Elliott instruments, and clarifying their specifications.17th Jul 1930Box 168 \ 5  img190
Note on the ordering and specification of Ferranti Ammeters, including details on finishes, covers, and types.19th Jul 1930Box 168 \ 5  img191
The standardization of Ferranti Ammeters following test results.22th Jul 1930Box 168 \ 5  img192
Log sheet for a Ferranti Ammeter tracking its usage, condition, and mileage from 1928 to 1930.2nd Sep 1930Box 168 \ 5  img193
Standardization of ammeters for left-hand drive chassis.2nd Sep 1930Box 168 \ 5  img194
Request for the inspection and readjustment of a faulty cut-out and ammeter from vehicle 25-EX.27th Sep 1930Box 168 \ 5  img195
Cancellation of a previous instruction and new instructions for fitting a Ferranti ammeter.29th Sep 1930Box 168 \ 5  img196
Supply status of Ferranti ammeters for F Benti matters.31th Oct 1930Box 168 \ 5  img197
The disposal of Elliott ammeters.20th Nov 1930Box 168 \ 5  img198
Request for information on Elliott Ammeters that are scheduled for disposal.20th Nov 1930Box 168 \ 5  img199
Requesting the disposal of several Elliott ammeters.21th Nov 1930Box 168 \ 5  img200
Collection, credit, and disposal arrangements for several Elliott ammeters.2nd Dec 1930Box 168 \ 5  img201
Instruction to refit a Ferranti ammeter from chassis 19-EX to 18-EX and return the existing Park Royal instrument.1st Dec 1930Box 168 \ 5  img202
Mileage and test log for a Ferranti Ammeter, model 32352 Type B.S.I.2nd Jan 1931Box 168 \ 5  img203
Test record log for Ferranti Ammeter no. 32353 Type B.S.I.5th Jan 1931Box 168 \ 5  img204
Test and usage log for Ferranti Ammeter no 32354, Type BSI.13th Feb 1930Box 168 \ 5  img205
Service and mileage record sheet for a Ferranti Simplexer, number 32355.6th Jan 1931Box 168 \ 5  img206
Experimental record sheet for a Ferranti Ammeter, number 32356, type B.S.1.1st Dec 1930Box 168 \ 5  img207
Chasing a response regarding the disposal of Park Royal and Elliott ammeters.8th Jan 1931Box 168 \ 5  img208
The inspection of Elliott Ammeters against a blueprint, noting discrepancies and required new cases.20th Jan 1931Box 168 \ 5  img209
Differences between two specific Elliott Ammeters (Nos. 153012 & 164148) and the standard drawing F.75652/5.1st Feb 1931Box 168 \ 5  img210
Requesting instructions for the disposal of two Elliott Ammeters.9th Mar 1931Box 168 \ 5  img211
Proposing to use a cheaper moving iron type ammeter instead of the current moving coil type for cost reduction.30th May 1931Box 168 \ 5  img212
Request to approach Messrs. Ferranti to submit a moving iron chassis ammeter for testing.6th Jun 1931Box 168 \ 5  img213
Suggesting making enquiries with an alternative supplier for a polarised moving iron chassis ammeter.6th Jul 1931Box 168 \ 5  img214
Inquiry to Ferranti's regarding the production of a polarised moving iron chassis ammeter.20th Aug 1931Box 168 \ 5  img215
Use of a more robust and less expensive moving iron type ammeter for the chassis instrument board.14th Oct 1931Box 168 \ 5  img216
Agreement to obtain a moving iron type of ammeter for the instrument board.20th Oct 1931Box 168 \ 5  img217
Request to source an ammeter with an inverted sketch for the 20/25 HP and Phantom II chassis.20th Oct 1931Box 168 \ 5  img218
Alteration of Ferranti ammeters for inverted mounting.23th Oct 1931Box 168 \ 5  img219
Specification for the inspection and testing of a chassis ammeter.28th Oct 1931Box 168 \ 5  img220
On the practice of replacing ammeters with control warning lamps on chassis electrical systems by Continental manufacturers.1st Nov 1931Box 168 \ 5  img221
Suitable ammeters and self-winding clocks for cars, recommending against Lucas and in favour of Weston, Elliott, or Ferranti ammeters and Boyce clocks.28th Nov 1931Box 168 \ 5  img222
Inquiry to the Weston Electric Instrument Co. about a moving iron ammeter.30th Nov 1931Box 168 \ 5  img223
Letter regarding a sample polarised moving iron Ammeter with cracked glass and plans for future UK manufacturing.3rd Dec 1931Box 168 \ 5  img224


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