DC-to-DC power conversion with high current output
Design drawing device
Design-making instrument
Determining and marking apparatus and method for use in optometr
Determining and marking apparatus and method for use in optometr
Determining and marking apparatus and method for use in optometr
Determining and marking apparatus and method for use in optometr
Determining and marking apparatus and method for use in optometr
Device and method for marking ophthalmic lenses and molds
Device for attaching rollers to a carriage adapted to move along
Device for circumscribing circles and ellipses
Device for circumscribing circles and ellipses
Device for cutting sanitary containers, in particular sacks,...
Device for describing an ellipse
Device for describing arcs
Device for drawing ellipses
Device for drawing ellipses
Device for drawing elliptical curves
Device for drawing objects in perspective
Drafting board with adjustable straight-edge assembly