Accession No
3458
Brief Description
parallel rule, by H. Hughes and Son Ltd., English, late 19th Century
Origin
England; London
Maker
H. Hughes and Son Ltd.
Class
drawing
Earliest Date
1875
Latest Date
1900
Inscription Date
Material
metal (Bactung metal)
Dimensions
length 616mm; breadth 75mm; thickness 21mm
Special Collection
Provenance
Purchased from David Stanley auctions, lot 196, 28/10/1986
Inscription
‘H. HUGHES & SON LD.
LONDON’
Description Notes
Parallel rule made of silvery metal (Bactung metal). Sliding joint bars in elegant curved design. compass points along lower edge of rule.
Condition good; complete
References
Events
Description
Parallel rule
Used by architects, engineers, cartographers and on nautical charts, the parallel rule is used for drawing parallel lines accurately. It is also used in conjunction with a scale rule for producing orthogonal drawings (with lines in non-parallel direction as well). The pivoting links can be extended to the required distance, but this makes the instrument liable to error for larger drawings because the extension is changed by hand, and can be varied accidentally.
18/10/2002
Created by: Saffron Clackson on 18/10/2002
FM:44434
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