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Great working Chotkeh Engineering Fundamentals Review Software Card for HP 48GX / 48SX Calculators. Includes installation instructions as shown. Guaranteed working condition. Free shipping in USA.  
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48GX#ABA-PP-NR. About the item: This item is associated with the following MPN(s): 48GX#ABA. For your protection and ours, security stickers are added to all products and serial numbers are recorded.
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TDS 48Cogo Survey overlays for HP 48 (48S, 48SX, 48G, 48GX) calculators. We have white, transparent, Survey GX, Survey Pro, and SMI Surveying overlays. We can reproduce any other overlay that you desire as well.
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48GX CASE-UVG. About the item: This item is associated with the following MPN(s): 48GX#ABA.
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TDS 48GX Survey Pro overlays for HP 48 (48S, 48SX, 48G, 48GX) calculators. We have white, transparent, Survey GX, Survey Pro, and SMI Surveying overlays.
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This is an edition 4 of the User Manual. Somewhat rare and it was supplied with Rom P calculators as well as the first batch of Rom R's. So I'm seeing if anyone is interested in it. The date of printing is August 1993. The margins of a few pages have been eaten as shown, but aside from that the book is intact with no writing.
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White overlays for HP 48 (48S, 48SX, 48G, 48GX) calculators. You can use a pencil or pen to write on them. This is of use if you write your own programs for the HP 48 and assign them to various keys.
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