Parallel Rule

Parallel Rule

 

a device for uniform hatching, used in drafting. The principal elements of a parallel rule are a straightedge with a protractor attachment, a fastening yoke, a rod, and a shift lever with a return spring. When the lever on the rod is pressed, the rod carrying the yoke with the straightedge is moved by a predetermined step ranging from 0.2 to 10 mm. The yoke may be fastened at any point on the rod up to a distance of 100 mm. The protractor attachment has a stop that allows the straightedge to be set at an angle from 0° to 180°. Self-contained parallel rules are attachable to any spot on the drawing by means of pins; other types are made in unit with drafting machines.

References in periodicals archive ?
Sohail was the incharge of the Taliban's FM-radio station during the TTP's parallel rule in the Swat Valley, The Daily Times reports.
TEI recommended that a parallel rule be adopted that would permit taxpayers to revise elections following reassessments where additional losses for the particular year are available within the group.
staff to coordinate with the staffs of the Securities and Exchange Commission (SEC) and the New York Stock Exchange (NYSE) to develop parallel rule language requiring that disclosure be made in a practical manner during scheduled public appearances by associated persons of member firms and registered investment advisors.
Remember, in a parallel rule, all tests are run on all cases and are considered positive if one or more tests are positive, and negative if all are negative.
A parallel rule precludes the allocation of assets from the upstream to downstream line.
The two leaders also discussed the deteriorating condition along the Pakistan-Afghanistan border where the Taliban have virtually established a parallel rule.
There are currently no parallel rules in the insurance industry.
Michael Jones, a senior partner in a leading Cardiff firm, said AMs were failing to introduce Welsh amendments to the regulations it was passing at the same time as parallel rules were introduced in England.
The Mark-It is made up of two parallel rules with metric and imperial calibrations.
Note: There are parallel rules to the item of income and BIG rules that deal with built-in losses and deduction items.
To a large extent, even the municipal law of various states contains parallel rules relating to legislative statutes, reflecting a similar underlying logic that brings to mind the use of the phrase "general principles of law" (as a subsidiary source of law the Court is authorized to apply) in Article 38 of the Statute of the ICJ.