Yeah they are both mettler scales. They are like 0.01 grams tolerance. They are made so wind does not disturb the scales.
I have one too. Its interesting how they work, the dials 'pick up' weights until the visual scale in the 'window' comes in to view.
That's where you read the last 0.01 (0.001?) Of a gram
So if you are weighing, say, 28.36gm weight.
Its picked up a 20gm weight, + a 8 gram weight, + a 0.3 gram weight to balance out the actual test weight, then you fiddle with the other dial to add up to or around the 0.06gms. Like a fine tolerance reading.
But, curiosity value only.
Today we have those tiny electric scales using piezo sheet on a stressed metal bar, that go down to 0.001gm and costing about 2 or 3 hours wages.
When you shift the Mettlers around, the weights fall off their little stands, you have to put them all back in place and also clean the lightbulb and little mirrors/window.
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