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 ?
A soft, silent rubber extension tube allows for instantaneous changes in call vocalization.
From what is given above, it appears that if we attach the 25mm extension tube to a 105mm macro lens, the effective magnification at closest focus will be 1.24:1.
A 20ml syringe is attached to 3-way stop cock with 2 plastic extension tubes, one connected to a mercury manometer and the other to a sterile 18 guage needle.
A viewer complained that the ad misleadingly implied that the extension tube and hose could be folded away into the product when they believed this was not the case.
Nilfisk-CFM's solution was an integrated 2 metre extension tube with specialist pipe brushes attached, enabling staff to stay at ground level during the cleaning process.
On top of the plinth extension tube a smaller hexagonal plate (6mm thick, 18cm across flats) was welded in place.
A report to the institutional clinical risk management unit was made and by reconstructing the events, it was evident that the intraoperative infusion of atracurium had been connected to a three-way stop-cock positioned at the proximal end of an 80 cm long extension tube (4.2 ml).
These actuators feature rugged construction with powder coated aluminum housing, steel protection tube, stainless steel extension tube, and powder metal gears.
All equipment was connected to the patient by the intravenous route through an extension tube fitted with a nonreturn valve.
The outer posts, with tempered aluminum floor socket stem and inner extension tube, are coupled with a lifetime warranty 26:1 machined worm gear net tensioning winch and knotless mesh net with Kevlar top rope net to maximize net tension performance.