Vintage work crew photos

[mklotz]

I've seen tweezers with bone or ivory tips that were used to handle weights because of the fear of steel tweezers scratching them.

I was amazed by the vernier weight rig on some analytical balances. Basically, it consisted of a light chain - one end attached to the weight pan arm, the other to a small drum that could be rotated by a shaft that projected outside the glass case. Turning the shaft caused more or less chain to hang from the balance; a calibrated dial on the drum showed the amount of weight added to the scale arm.

[Hoosiersmoker]

I've seen tweezers with bone or ivory tips that were used to handle weights because of the fear of steel tweezers scratching them.

I was amazed by the vernier weight rig on some analytical balances. Basically, it consisted of a light chain - one end attached to the weight pan arm, the other to a small drum that could be rotated by a shaft that projected outside the glass case. Turning the shaft caused more or less chain to hang from the balance; a calibrated dial on the drum showed the amount of weight added to the scale arm.

Wow! That's a long way to go but accuracy is essential.