spacer

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spacer

[′spās·ər]
(engineering)
A piece of metal wire twisted at one end to form a guard to keep the explosive in a shothole in place and twisted at the other end to form a guard to hold the tamping in its place.
A piece of wood doweling interposed between charges to extend the column of explosive.
A device for holding two members at a given distance from each other. Also known as spacer block.
The tapered section of a pug joining the barrel to the die; clay is compressed in this section before it issues through the die.

spacer

1. In glazing, one of the small blocks of wood or other material placed on both sides of the edges of glass, during its installation, to center it, to maintain uniform width of sealant beads, and to prevent excessive sealant distortion under lateral loading.
2. A device which holds steel reinforcement in its proper position, or which holds wall forms at a given distance apart before and during concreting.
References in periodicals archive ?
It comes with a combined carpet and floor cleaning brush, triangular brush, window-cleaning brush, 120-degree tool with brush insert, funnel, cloth, two extension tubes and an integrated accessories holder.
Two graphite extension tubes, not cooled, are fitted to the cooled copper end caps to provide a smooth flow passage for the argon gas.
An electric grid in the unit's handle kills insects on contact, unlike lesser models that merely stun them temporarily, and easily disposed by removing the extension tube.
The ad showed the extension tube or "wand" being compacted before the cleaner was seen, without the wand or hose, being placed on a shelf in a cupboard.
The extension tube has male threads at the back and female threads at the front, allowing you to turn in the breaching tube or any other Beretta-pattern choke tube.
Don't rely on the likewise built-in cutouts on the "multi-purpose" tools for extension tube and flash suppressor wrench flats.
The extension tube has special high-temperature sealing rings, and the structure can be slid out for servicing, without entering the tower or vessel.
nge the The sleek design is ideal for 007's hi-tech pad, and attachments, from the 27in extension tube, to nozzles for nooks and crannies, are worthy of a pad, e, to of a design by Q.
The Shewee Extreme offers more choice thanks to the new detachable extension tube which makes it easier for skiers and climbers to pee.
The T60 is a very compact and powerful push-rod style actuator with a 75 mm x 60 mm profile housing and a 38 mm diameter hard chromed steel extension tube for selectable travel up to 1,500 mm, direct force to 1000 N, speeds to 300 mm/sec and acceleration to 8 m/sec2.
For the duck blind, the supplied four-inch extension tube screws into the barrel.
On top of the plinth extension tube a smaller hexagonal plate (6mm thick, 18cm across flats) was welded in place.