Hewlett Packard HP 41CV Calculator w Math 1 And Thermal Modules Tested Working

- Best for collectors and engineers seeking a classic programmable calculator in working order with commonly-requested expansion modules already installed.
- Stated good condition with fresh batteries installed means the unit is ready to use; verify all keys respond consistently and modules seat firmly before finalizing.
- Seller has 2,404 feedback ratings at 99.9% positive, establishing consistent transaction reliability over time.
- Shipping cost varies by location and is calculated at checkout; handling time and delivery speed are shown per your zip code on the eBay listing.
- HP 41CV programmable calculator includes Math 1 and Thermal modules; original United States manufacture.
- Before purchase, confirm the unit powers on, display illuminates clearly, and all three modules (base unit plus two add-ons) are recognized and functional when powered.