Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1102272A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HOARE B
HOARE V
Original Assignee
HOARE B
HOARE V
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HOARE B, HOARE VfiledCriticalHOARE B
Publication of GB1335527ApublicationCriticalpatent/GB1335527A/en
B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
B43L7/00—Straightedges
B43L7/002—Straightedges for drawing boards and tables
Landscapes
Drawing Aids And Blackboards
(AREA)
Abstract
1335527 Rulers B HOARE and V HOARE 9 March 1972 [22 March 1971] 11022/72 Heading B6P [Also in Division G1] A ruler 2 is attached to a drafting machine head by mounting means 1 permitting the ruler 2 to be rotated about its longitudinal axis, in order to change the operative scale A, B. The ruler may be of parallelogram cross-section, and have two scales, or may be of hexagonal cross-section (Fig. 5, not shown) with four scales, and be provided with a mounting means 1 at each end.
Instruction manual for dual digital stabiliser type 241(Instruction manual for type 241 dual digital stabilizer used to improve stability and resolution of multichannel analyzers)