Answer: tsquare

AnswerCrossword Clue
TSQUARE

Drafting implement

TSQUARE

Drawing board item

TSQUARE

Drawing-board staple

TSQUARE
Means of drawing a parallel
TSQUARE
Draftsperson's device
TSQUAREDraftsman's ruler.
TSQUAREDraftsman's tool.
TSQUAREDraftsman's gear.
TSQUAREDraftsman's adjunct.
TSQUAREDrawing-board ruler
TSQUAREArtist's ruler
TSQUARERuler of a kind
TSQUAREDrafting aid
TSQUAREDraftsman's tool
TSQUAREAid in drawing parallels?
TSQUARETechnical drawing tool