this letter scale goes up to 250 grams | This letter scale with the gracefully curved frame comes from Germany. There is no logo or brand on it. The weighing range is 250 grams. The unit of measure is stated as G.RM on the scale. The scale is subdivided per 5 grams up to 100 grams. From 100 to 250 grams, the subdivision is per 10 grams. At the ends of the scale you can just see that the scale was originally nickel-plated. The auxiliary pivot point of the scale mechanism is remarkably low on the frame. This can only be seen with the earliest letter scales from Guérin and Kern, see the images at the bottom right of this web page. This letter scale has no separate counterweight, the scale arm with the viewing window itself is sufficiently heavy. The reading thread was strangely enough on the front of the viewing window, presumably after a careless repair. I have put the reading wire on the back of the viewing window so that it is close to the chart. A letter tray was missing at the time of purchase, I just fitted a replacement brass tray on this long, slender stand. | back of the letter scale |
The scale is 232 millimeters high. The replacement letter tray is 90 millimeters round. The foot width is 93 millimeters, the horizontal length of the scale frame is 186 millimeters. Below some more pictures of this beautifully curved old letter scale
up to 250 grams subdivided per 10 grams |
the auxiliary pivot point is remarkably low | the unit of measure GRM |
the reading window |
the soldered repaired reading wire |
with a long stripe of measure per 50g |
the reading wire was in front of the window |
the bought still incomplete scale |
Guérin's letter scale with a low auxiliary pivot point source: Le Génie Industriel, February 1853, pp94-95 |
Kern letter scale from 1874 with low auxiliary pivot point, the first copies were sold in 1851 |
« collection part 22 « | © copyright André Sol | version: January 20, 2021 |