| Tool Steel Alloy Types | Spring Temper | Location |
| Back saw | 10700-T1 | bio |
| Cast steel, brass and wood, 15 3/4" long with 12" blade, signed "POOLe"? and "STAN FORTN & CO SHEFFIELD" and "Double |
| refined spring WARRANTED" with the brass signed "H. DISSTON & SONS PHILADA". |
| English-made spring steel has been processed by Henry Disston & Co. into a saw. The marks on this saw are a puzzle |
| because H. Disston & Sons is a later signature and by this time Disston was producing his own cast and spring steel. |
| Historic Maritime IV (1840-1865): The Early Industrial Revolution | Saws |
| Machinist's rule | 41801T13 |
| Steel, 2 15/16" long, signed "HOPE & Co. PROV. R.I." on one side and "SPRING STEEL" on the other. |
| DATM (1999) lists Hope & Co. as making engraving machines in 1868. No mention is made of making any other tools. A |
| rare find from the early years of the Industrial Revolution. |
| The Industrial Revolution (1865f.): Classic Period of American Machinist's Tools | Measuring Tools |
| Hand saw | TCW1003 |
| Cast steel with solid brasses, 14 3/4" long, 11 3/8" blade, signed "T TILLOTSON SHEFFIELD (FIN)EST REFINED CAST |
| STEEL SPRINGTEMPER WARRANTED", 1800 - 1820. |
| The unusual markings also include a crown touchmark and brasses. DATM lists T Tillotson without a location or date; did he |
| emigrate to America? An example of imported English cast steel reworked by an American toolmaker. |
| Historic Maritime III (1800-1840): Boomtown Years & the Dawn of the Industrial Revolution | Saws |
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