Details
Two calculators:
a British, Model B for Compound Addition, in circular oxidised casing - 5¼ in. (13.5 cm.) diam., in fitted black case with cardboard carton; and a Fowler's Long Scale, No. 16784, with scales on each face -- 2 5/8in. (6.8 cm.) diam., in square nickel-plated case (2)
a British, Model B for Compound Addition, in circular oxidised casing - 5¼ in. (13.5 cm.) diam., in fitted black case with cardboard carton; and a Fowler's Long Scale, No. 16784, with scales on each face -- 2 5/8in. (6.8 cm.) diam., in square nickel-plated case (2)