Gill's Measuring Machine for Micrometer

| View Cart ⇗ | Info

“Sir David Gill devised a measuring machine which combines the rapidity of the glass—scale micrometer with the accuracy of the spider—line micrometer and simplifies the reductions of the observations at the same time.” —Encyclopaedia Brittannica, 1910


Encyclopaedia Britannica (11th ed., vol. 18) (New York, NY: The Encyclopaedia Britannica Company, 1910)


TIFF (full resolution)

2253×2400, 1.2 MiB

Large GIF

961×1024, 209.8 KiB

Medium GIF

600×640, 104.3 KiB

Small GIF

300×320, 33.3 KiB