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Similar to B12160 but smaller size.
Brass, plated.
Stove enameled.
A fantastic model of centenary arch made of fine quality wood. It consist 13 precision-cut wooden blocks and a wooden arch. All pieces can be assembled to make a Catenary Arch
With effective scale lengths of nearly 9″, Rotary scales offer greater accuracy than linear scales. All balances are graduated in gram/Newton. Dial: 3″ diameter metal suspension ring at top and hook at bottom.
