Watkins's Factorial Calculator

| View Cart ⇗ | Info

An aluminum set of disks that correctly finds the time needed to develop photos in solution

Keywords

photography, temperature, alkali, bromide, developing, exposure

Galleries

Miscellaneous Math Tools, Cameras and Photography, Calculators

Source

Encyclopaedia Britannica (New York: The Encyclopaedia Britannica Company, 1910) 21:519

Downloads

TIFF (full resolution)

2453×2400, 2.0 MiB

Large GIF

1024×1001, 248.7 KiB

Medium GIF

640×626, 127.7 KiB

Small GIF

320×313, 44.4 KiB