Main breaker height

Can someone give me the reference on how high above the “surface” can the main breaker be., I know it has to be “readily accessible” but I can’t find the ref to how high. I thought it was 6’8", but maybe a brain fault has hit me. I can’t find the code I saw once (don’t freak, the code is for me).

240.24 Location in or on Premises.
(A) Accessibility. Overcurrent devices shall be readily accessible
and shall be installed so that the center of the grip
of the operating handle of the switch or circuit breaker,
when in its highest position, is not more than 2.0 m (6 ft
7 in.) above the floor or working platform

Two meters or 6’-7" to the middle of the operating handle, main breaker or branch circuit.