XnRVDwAAQBAJ%3Fhl=en&gbpv=1&bsq=%22Current%20(I)%20statamp%22&dq=%22Encyclopaedia%20of%20Historical%20Metrology%2C%20Weights%2C%20and%20Measures%22%20vol%201&pg=PA25&printsec=frontcover
XnRVDwAAQBAJ%3Fhl=en&gbpv=1&bsq=%22Current%20(I)%20statamp%22&dq=%22Encyclopaedia%20of%20Historical%20Metrology%2C%20Weights%2C%20and%20Measures%22%20vol%201&pg=PA25&printsec=frontcover