Home / Store / School and Office / Vintage Acu-Math No.400 Slide Rule Vintage Acu-Math No.400 Slide Rule$12.50 In stock Vintage Acu-Math No.400 Slide Rule quantity Add to cart Category: School and Office Tags: math, rule, ruler, School Description Additional information Description Vintage Acu-Math No.400 Slide Rule. Good condition, comes with case. Additional information Weight .2 lbs Dimensions 12.75 × 2.5 × .4 in Related products Vintage “The Force” Model 200 Date Stamp Pat. 1925 $10.00 Add to cart Vintage Tecnar Swift Microscope – Made in Japan $22.00 Add to cart Stanley No.65 12″ Rule $60.00 Add to cart Lot of Staedtler Geometry Tools and Telescopic Pointer $15.00 Add to cart