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Bruning 2420 Full Size Slide Rule w/Box & Case (Excellent condition)

USD $165

This rule is in near new condition with only minor marking on parts of the rule body, includes its original leather case and factory box.  Al plastic construction, with black and red engraved scales, imperial ruler on the upper edge, metric ruler on the lower edge, and metal framed glass cursor.

(9 Scales, 2 rulers)
Front – A [B, CI, C] D, K
Back – [S, L, T] Conversion factors

Stock: 1

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K&E 68-1581 / 4161-1 Jet Math Pocket Slide Rule Box Set (NIB/mint)

USD $125

5″/6″ Jet Math Pocket Set
NEW, VERY LATE MODEL, DISPLAY BOXED SET, EXCELLENT CONDITION.  This is a rare opportunity to get the complete late version Ivorite body Jet Math Pocket rule from K+E (rule marked with old-style 4161-1), in the complete set (68-1581), with orange sewn leather pocket clip case, softcover manual, care booklet and fitted display box.

This K+E pocket rule has an unbreakable improved cursor and white body with black engraved and filled scales. A very attractive rule, and complete in a factory boxed set. This rule has folded (CF/DF) scales at pi, with the trig scales in decimal degrees. The back is blank, but the slide is reversible with trig scales (T, ST, S, C). The pic shows the actual box condition, and all the parts offered for sale. An interesting transitional set, the rule has the older 4000 marking, the box and set the later 68 series markings. An outstanding set for a gift.

(12 Scales)
Front – K, DF, [ CF, L, CI, C, ] D, A
Back – [ T, ST, S, C]

Stock: 4

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K&E 4161-1 Jet Math Duplex Pocket Slide Rule

USD $95

This is an early version Ivorite body Jet Math Pocket rule from K+E, with green leather pocket sheath case, and softcover manual.

This K+E pocket rule has an unbreakable improved cursor and white body with black engraved and filled scales. A very attractive rule, and complete in a factory boxed set. This rule has folded (CF/DF) scales at pi, with the trig scales in decimal degrees. The back is blank, but the slide is reversible with trig scales (T, ST, S, C). The pic shows the actual box condition, and all the parts offered for sale.

(12 Scales)
Front – K, DF, CF, L, CI, C, D, A [ T, ST, S, C]
Back – Blank

Stock: 2

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