- boundary description
- boundary dimensions
- boundary member
- boundary parameter
- bow
- bow compasses
- bow drill
- bow girder
- bow saw
- box
- box aqueduct
- box casting
- box chuck
- box coupling
- box hook
- box key
- box level
- box lubricator
- box nut
- box pin
- box scraper
- box section
- box spanner
- box table
- box wrench
- box-grooved
- box-like
- box-type
- boxed
- blow lamp
- blower
- blower fan
- blower impeller
- blown
- blown casting
- blowpipe
- blowtorch
- blue steel
- blunt start
- bluntness
- bob
- bobbin
- body
- body construction
- body design
- body types
- bog drainage
- bogey
- bogie
- boiler control
- bolt
- bolt chisel
- bolt coupling
- bolt cutter
- bolt head
- bolt hold
- bond
- bond strength
- boom sheet
- boost
- booster
- booster brake
- booster pump
- bore
- bore surface
- boring bar
- boring bench
- boring cutter
- boring head
- boring machine
- boring mill
- boring pipe
- boring tool
- borling speed
- boss
- bottle jack
- bottom brass
- bottom cap
- bottom discharge
- bottom gate
- bottom hole
- bottom land
- bottom opening
- bottom outlet
- bottom pressure
- bottom profile
- bottom ring
- bottom slide
- bottom-dump
- bottomless
- boyage
- brace strut
- bracket
- bracket crane
- braided
- brake band
- brake cable
- brake chamber
- brake cone
- brake cylinder