Analytical balance, German/British, 1890

Total height 49cm x 38cm x 29cm. The analytical balance is the most fundamental tool in the chemists arsenal. It is used to determine the masses of, or in other words the amount of stuff in, objects or samples. The balance is a comparison instrument. It compares standard or known weights placed on the left-hand pan to unknown samples or objects placed on the right-hand pan. The balance is inside a mahogany glass case with a balanced frontal door. The mahogany glass case is set on a thick black glass base. There is a beautiful mechanism to level the balance. The glass case is to protect the balance from drafts while samples are being weighed, as well to keep the delicate mechanisms free from dirt. The release mechanism operates on both the beam and the pans. The balance has knife edges on planes for the beam and both pans. It has a pneumatic device for the oscillation. The loading of the weight fraction is made from the outside. The balance also has a rider (a small (5 or 10 mg) bent wire weight, which is moved along the graduated scale on the top of the beam) to measure small (1-10 mg) differences in weight. The maker is Sartorius – Göttingen, but is probably resold by A. Gallenkamp & Co ltd. 19&21 Sun Street Finsbury London E.C. The balance comes together with the original wooden box with weights. The box is lined with black velvet. Inside the box is a cupper pincher with bone legs and a glass cover for the smallest weights. The following weights are present: 50gr, 20gr, 10gr (2x), 5gr, 2gr, 1gr (3x), 0,5gr, 0,2gr, 0,1gr (2x), 0,05gr


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