Tehnolemn Timisoara Slide Rule Archive.
(Romanian Riglas de Calcul)

These rules are from the collections of Jim Cerny and Bob Adams. The four models and variants shown are the only occurrences of Tehnolemn rules we are aware of. Scale notation follows that in Herman Herwijnen's catalog.

The Tehnolemn rules use two logos, a leaping stag in a circle and a script rendering of "Tehnolemn".
(rev. 12/15/2002)

Model 1473-66   25cm   Politehnica   19 scales


Front: 27cm / P K A = B BF IC CI C = D LL3 LL2 LL1 ] L 1:2.5
Well: # Dinam Motor Volt #
Back: (paper table) = S ST T =

See oversize images of the front and back and cursor. Overall design and construction is similar to a Faber-Castell Electro rule, including the chisel-type cursor on the left end of the slide.

Model 1474-66   25cm   Electrotehnica   18 scales


Front: 27cm / LL2 K A = B BF IC CI C = D P LL3 ] L
Well: # Dinam Motor Volt #
Back: (paper table) = S ST T =

See oversize images of the front and back and case. Cursor is the same as for the Politehnica. Overall design and construction is similar to a Faber-Castell Electro rule, including the chisel-type cursor on the left end of the slide, and use of green color for one of the scales (BF).

Model 6188-60   12.5cm   Rietz-type   10 scales


Front: K A = B CI C = D L
Back: (name) = Sin S&T Tg =

See oversize images of the front and back. Same model number and scale set as the 25cm version of this rule, except no measurement scales on the edges.

Model 6188-60   25cm   Rietz-type   10 scales


Front: 27cm / K A = B CI C = D L ] 1:2.5
Back: (paper table) = sin sin/tg tg =

See oversize images of the front and back. See oversize images for a nearly identical instance of this model front with very slightly different font (see "3" and "pi") and back with very slightly different paper table layout. Same model number and scale set as the 12.5cm version of this rule, except this model includes measurement scales on the edges..

Send questions to cernynh at the yahoo dot com domain.