photographic balance
Eastman Studio Scale

maker: Eastman Kodak Co., Rochester, N.Y., U.S.A.
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photographic balance, maker Eastman Kodak
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
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.

scale detail
rotary knobs for fine adjustment
knife-edge bearings, and loose dishes
 
scale detail
the 6 weights are 2x 5g, 10g, 15g, 30g, en 60g
 
 
scale detail
the frame part with the letters EKC
 
 
detail 1
the pointer indicates the balance
 
detail 2
the brand plate with holes for the weights
 
detail 3
75 grains and 5 grams
 
detail 4
the left rotary knob for fine adjustment
 
detail 5
the two dishes are next to the balance
 
detail 6
the black sliding weight is on the left of the chart
 
detail 7
upside down
 
detail 8
four G.mos weights placed obliquely
 
detail 9
the bottom has three rubber feet
 
detail 7
page from Studio Light from March 1916
 
detail 8
from Eastman Professional Photographic Apparatus from 1936-1937
 
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« collection part 23 «© copyright André Solversion: February 28, 2021