4 ms·
Also the tertiary ones? (I was -poorly- trying to indicate I was after a secondary /national/ standard - the ones calibrated against the national reference whic
by lb1lf 8y ago
Also the tertiary ones? (I was -poorly- trying to indicate I was after a secondary /national/ standard - the ones calibrated against the national reference which is in turn calibrated against the Paris one.
Fingers crossed. :)