Your search query on "MCDONNELL & MILLER Limit & Snap Action Switches" returned the following results:

McDonnell & Miller, FS4-3T1-3/4, 3/4" Flow Switch w/NPT body (High Flow Rate) (325753681835)

MCDONNELL & MILLER 115000 FS4-3T3-3/4 FLOW SWITCH 3/4" NPT, LOW FLOW RATE, SPDT (195353353500)

McDonnell & Miller FS4-3S Flow Switch 1" NPT 115VAC@7.4A.F.L. 160 psi USED (225289772588)

McDonnell & Miller Limit Switch 330N (256266004413)

Mcdonnell & miller afe-1 air flow switch (334377267615)

51-S-2 Mcdonnell Miller 51-S W/#2 Cutoff Sw.,#135900 OEM 51-S-2 (383829551027)