Details
A Curta Type 1 calculator,
no. 74917, in black plastic canister, with instruction booklet; and a Speed and Power Scale slide-rule for Proposed Vessels on Measured Mile Trials, by A.M.Gordon, 1894, in slipcase (2)
no. 74917, in black plastic canister, with instruction booklet; and a Speed and Power Scale slide-rule for Proposed Vessels on Measured Mile Trials, by A.M.Gordon, 1894, in slipcase (2)