horizontal spring

off-route mine (ORM); horizontal action mine; horizontal effects mine; side-hitting mine

horizontal volute spring suspension

belt feed pawl spring / belt-feed pawl spring

belt feed lever pivot spring / belt-feed lever pivot spring

horizontal circle clamp

horizontal datum

horizontal datum note

horizontal loading

horizontal scales

target horizontal range

bilateral spotting, horizontal base method

horizontal / vertical steering command

horizontal range to target

horizontal effects mine

horizontal

horizontal base method

horizontal blade strut

horizontal control

horizontal displacement

horizontal feed

horizontal field of fire

horizontal field of view

horizontal gear

horizontal mll scale

horizontal shot group

horizontal sighting string

horizontal sliding wedge breechblock

horizontal sliding wedge-type breech

future horizontal range

horizontal empennage

horizontal stabilizer control jack

horizontal tail