gauge bob

gauge plumb bob

Bayard-Alpert ionization gauge (B-A gauge)

Brown and Sharpe wire gauge {= B&S wire gauge}

track gauge level gauge

additional bob-weight

balance bob

bicone-bob torsion pendulum viscometer

BM Bob Metcalfe

boat’boat’bob weight

bob

BOB Beginning Of Block

Bob cotton

BOB monsoon

BOB ship

bob spring

bob up

bob up and down

bob up like a cork