The Research Archives
Where the primary sources live — the digital archives holding trade catalogs, period advertising, engravings, and technical illustration for vintage precision instruments.
Categoriesresearcharchivessourcesprimary-sources
Library
Reference library
Every published document: mapped by what it shares, then indexed by kind with what each one cites and what cites it.
SELECT A DOCUMENT TO PLOT ITS ORIGIN
MAKER ORIGINS · NATURAL EARTH 10M
Chart Key
HUB
DOSSIER
EDUCATION
METHODOLOGY
COMPANY
SHARES A TAG
PREREQUISITE
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HUBS ARE THE TAGS THE DOCUMENTS SHARE · ISLANDS ARE INFORMATION: A DOCUMENT SHARING NO TAG SHOWS WHERE THE LIBRARY IS THIN.
The index
1Guides & sources
2Patents
Federal Products (Providence) REF-PAT-FED REV D
Street patents, Miracle Movement, and the Testmaster supplier question
- Family
- DTI · conjugate crown gear / plunger · Miracle Movement
- Makers
- Federal
- Patents on file
- US2141627
- Specimens
- 31 in the collection
See alsoREF-PAT-711 Last Word Test Indicator · REF-PAT-GLD Gladwin .020in Test Indicator · REF-PAT-PRS Pearson Finger-Type Indicator · REF-MFR-KAFER · REF-PAT-VDT A. Capp & Son Ltd / Verdict Gauge Works (Crayford) · REF-ANA
Cited byREF-PAT-VDT A. Capp & Son Ltd / Verdict Gauge Works (Crayford) · REF-ADV-711 Selling the Last Word
Categoriesfederalpatentsindicatorsprovidence
Gladwin .020in Test Indicator REF-PAT-GLD REV B
Winters/Gladwin patent dossier
- Family
- DTI · dual-arm lever
- Makers
- Gladwin
- Patents on file
- US1994497 · US2121848
- Specimens
- 1 in the collection
See alsoREF-PAT-711 Last Word Test Indicator · REF-PAT-PRS Pearson Finger-Type Indicator · REF-MFR-KAFER
Cited byREF-PAT-FED Federal Products (Providence) · REF-PAT-VDT A. Capp & Son Ltd / Verdict Gauge Works (Crayford) · REF-PAT-711 Last Word Test Indicator · REF-PAT-PRS Pearson Finger-Type Indicator · REF-ADV-711 Selling the Last Word
Categoriesgladwinpatentsindicators
A. Capp & Son Ltd / Verdict Gauge Works (Crayford) REF-PAT-VDT REV E
helix-drive DTI, maker & patent dossier
- Family
- DTI · helix drive · Crayford, Kent
- Makers
- Verdict, Capp
- Patents on file
- GB468243 · GB720132 · US3161963 · US2345845
- Specimens
- 3 in the collection
See alsoREF-PAT-FED Federal Products (Providence) · REF-PAT-711 Last Word Test Indicator · REF-PAT-GLD Gladwin .020in Test Indicator · REF-PAT-PRS Pearson Finger-Type Indicator · REF-MFR-KAFER · REF-ANA
Cited byREF-PAT-FED Federal Products (Providence)
Categoriesverdictcapppatentsindicators
Last Word Test Indicator REF-PAT-711 REV C
Lowe/Starrett patent dossier
- Family
- DTI · helix-and-jewel
- Makers
- Starrett
- Patents on file
- US1144367 · US1466664 · US1486908 · US1585778
- Specimens
- 12 in the collection
See alsoREF-PAT-GLD Gladwin .020in Test Indicator · REF-PAT-PRS Pearson Finger-Type Indicator · REF-MFR-KAFER
Cited byREF-PAT-FED Federal Products (Providence) · REF-PAT-GLD Gladwin .020in Test Indicator · REF-PAT-VDT A. Capp & Son Ltd / Verdict Gauge Works (Crayford) · REF-PAT-PRS Pearson Finger-Type Indicator · REF-ADV-711 Selling the Last Word
Categoriesstarrettlastwordpatentsindicators
Pearson Finger-Type Indicator REF-PAT-PRS REV C
Pearson/MAGICO patent dossier
- Family
- DTI · knife-edge rectifier
- Makers
- Pearson
- Patents on file
- US2341809
- Specimens
- 2 in the collection
See alsoREF-PAT-711 Last Word Test Indicator · REF-PAT-GLD Gladwin .020in Test Indicator · REF-MFR-KAFER
Cited byREF-PAT-FED Federal Products (Providence) · REF-PAT-GLD Gladwin .020in Test Indicator · REF-PAT-VDT A. Capp & Son Ltd / Verdict Gauge Works (Crayford) · REF-PAT-711 Last Word Test Indicator · REF-ADV-711 Selling the Last Word
Categoriespearsonpatentsindicators
Vintage Alina / Compac (pre-IXL K & M series) REF-PAT-ALN REV A
Maker Exploration File
- Family
- INTERAPID-TESA (Compac cluster)
- Makers
- Alina, Compac, Lufkin, Parvus
- Specimens
- 8 in the collection
Categoriesalinacompaclufkinparvuspatentsindicatorsmaker-exploration
3Service
Interapid Movement REF-SVC-IAP-HS REV C
elements, mechanism & fault diagnosis (photo-plated from a specimen)
- Makers
- Interapid
- Specimens
- 14 in the collection
Categoriesinterapidservicediagnostics
Post-Flush Minimum Relubrication Protocol REF-SVC-RELUBE
bench service reference for dial indicators & DTIs
Categoriesservicelubricationbench-practice
4Theory
Hysteresis in Lever-Type DTIs REF-THY-HYS-VIZ REV A-CANDIDATE
Error Modalities, Interactive Module
- Makers
- Interapid
Categorieshysteresistheoryinterapiddiagnostics
5Ephemera
Selling the Last Word REF-ADV-711 REV A
marketing & ephemera dossier, 1902-1935
- Family
- starrett-711-lastword
- Makers
- Starrett
- Specimens
- 12 in the collection
See alsoREF-PAT-711 Last Word Test Indicator · REF-PAT-GLD Gladwin .020in Test Indicator · REF-PAT-PRS Pearson Finger-Type Indicator · REF-PAT-FED Federal Products (Providence)
6Research
Meteorite Sourcing & Authentication REF-MKT-MET REV A
sourcing, authentication & anatomy (new MKT genre)
- Family
- Meteorites
Categoriesmeteoritesauthentication
7Categories
Every tag the documents carry, makers first. A tag two or more documents share is what the Door at the foot of each page calls "nearby".
- interapid2
- Interapid Movement · Hysteresis in Lever-Type DTIs
- starrett2
- Last Word Test Indicator · Selling the Last Word
- federal1
- Federal Products (Providence)
- gladwin1
- Gladwin .020in Test Indicator
- pearson1
- Pearson Finger-Type Indicator
- indicators6
- Federal Products (Providence) · Gladwin .020in Test Indicator · A. Capp & Son Ltd / Verdict Gauge Works (Crayford) · Last Word Test Indicator · Pearson Finger-Type Indicator · Vintage Alina / Compac (pre-IXL K & M series)
- patents6
- Federal Products (Providence) · Gladwin .020in Test Indicator · A. Capp & Son Ltd / Verdict Gauge Works (Crayford) · Last Word Test Indicator · Pearson Finger-Type Indicator · Vintage Alina / Compac (pre-IXL K & M series)
- diagnostics2
- Interapid Movement · Hysteresis in Lever-Type DTIs
- lastword2
- Last Word Test Indicator · Selling the Last Word
- archives1
- The Research Archives
- authentication1
- Meteorite Sourcing & Authentication
- bench-practice1
- Post-Flush Minimum Relubrication Protocol
- history1
- Selling the Last Word
- hysteresis1
- Hysteresis in Lever-Type DTIs
- lubrication1
- Post-Flush Minimum Relubrication Protocol
- maker-exploration1
- Vintage Alina / Compac (pre-IXL K & M series)
- marketing1
- Selling the Last Word
- meteorites1
- Meteorite Sourcing & Authentication
- primary-sources1
- The Research Archives
- providence1
- Federal Products (Providence)
- research1
- The Research Archives
- sources1
- The Research Archives