This erector approaches closely the faculties of the human arm.
If he erected the Memorial, he should have been described as "The Erector."
Here, for the first time, an “erector arm” was used for placing the segments, which weighed about half a ton.
William Murdock, at this time a Boulton and Watt erector, may have suggested this arrangement.
The erector consisted of a box-shaped frame mounted on a central shaft revolving on bearings attached to the shield.
The principal figures connected with the erector, assuming a water pressure of 5,000 lb.
The erector rotating rams were controlled by a similar valve, with four spindles, also operated by a single hand-wheel.
The erector muscles of the spine (sacrolumbalis, longissimus dorsi and multifidus spinæ) weighed fully 16 lbs.
Like the erector of a pillar, he supports the sky with his smoke; and one of his distinctive epithets is “smoke-bannered.”
The erector spinæ masses are treated by careful finger-tip kneading.
