April Haul

 The mathematical tools purchased in April so far...

From the Pasadena City College Swap Meet:

A 27-slot soroban abacus, the longest abacus that I have ever seen..

A 5 inch Frederick Post Co. No. 1444K slide rule.

Online:

Sharp EL-506TS (review to come soon)

Casio fx-991CW: (See review here:  http://edspi31415.blogspot.com/2023/04/review-casio-fx-991cw.html

Eddie

All original content copyright, © 2011-2023.  Edward Shore.   Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited.  This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author.