the photographic balance of maker Eastman Kodak | Officially, this photographic balance is called the Eastman Studio Scale. In analog photography you develop the photo roll with chemicals into stable negatives. In the early years, people had to weigh the quantities of chemicals themselves in order to arrive at the correct mixing ratios for the developer. This kind of balances were used for that. Even amateur photographers had their own darkroom. Later these balances became redundant because prepackaged powders were used in the correct amounts for the mix. The Eastman Kodak balance dates from the period 1912 to circa 1948. On the left scale you put the powder to be weighed. The weights are placed on the right-hand scale, if more than 5 grams (respectively 75 grains) have to be weighed. The balance was supplied with weights avoirdupois = grains / ounces or in metric = grams. This copy is a Spanish version, the weights are in G.mos (= Gramos = grams). | back of the balance |
The weights supplied are 2x 5g, 10g, 15g, 30g, and 60g. In the central frame part the pointer for balance is placed, just below the beautifully cut letters EKC, the Eastman Kodak Company. Photographic scales have already been shown before, see for example this one from Narcisse Briais from France and this one from Johnsons of Hendon from England. The American manufacturer Pelouze also has such a photographic or laboratory balance with its scale model Rexo.
Below some more pictures of the Eastman Studio Scale.
rotary knobs for fine adjustment knife-edge bearings, and loose dishes |
the 6 weights are 2x 5g, 10g, 15g, 30g, en 60g | the frame part with the letters EKC |
the pointer indicates the balance |
the brand plate with holes for the weights |
75 grains and 5 grams |
the left rotary knob for fine adjustment |
the two dishes are next to the balance |
the black sliding weight is on the left of the chart |
upside down |
four G.mos weights placed obliquely |
the bottom has three rubber feet |
page from Studio Light from March 1916 |
from Eastman Professional Photographic Apparatus from 1936-1937 |
« collection part 23 « | © copyright André Sol | version: February 28, 2021 |