 Takeda Concise Circular Slide Rule Caterpillar Inst US $36.00 |
 Slide Rule Manual Circular Calculator Engineering onCD US $9.99 |
 Soviet Watch Type 2side CIRCULAR SLIDE RULE KL 1 in BOX US $75.00
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 Longacre Circular Slide Rule 50941 US $21.95
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 Longacre Circular Slide Rule 50942 US $21.95
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 Longacre Circular Slide Rule 50943 US $21.95
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 1960s POCKET CIRCULAR DUPLEX SLIDE RULE CALCULATOR KL 1 US $9.99 |
 PICKETT CIRCULAR SLIDE RULE MODEL 103ES US $49.99 |
 Concise Circular Slide Rule with Advertising Firmenich US $20.00
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 Pickett Circular Slide Rule Model 103ES US $49.99 |
 Unusual Circular Slide Rule General Industrial c1959 US $3.99 |
 Concise Circular Slide Rule Simmonds Precision Palmer US $5.95 |