Vintage IBM Mark Sensing Pencil Leads Electrographic 35+ Pieces
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Product details
| Management number | 8681772 | Release Date | 2025/09/03 | List Price | $15.00 | Model Number | 8681772 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
IBM Mark Sensing Pencil Leads, specifically designed for electrographic mark sensing technology. These leads were used with IBM's mark sense technology for machine reading of human-made marks on documents like tests and utility bills.
Purpose:
Designed for use with IBM's mark sensing technology, allowing machines to read marks made by the pencils.
Material:
Made with electro graphite, a type of artificial graphite that is more conductive than standard pencil lead.
Function:
The graphite in the lead conducts electricity, enabling machines to detect the marks.
Usage:
Used for marking on specialized cards that could be read by machines for data processing.
| Category | Office > Writing Supplies > Mechanical Pencil Lead Refills |
|---|---|
| Size | N/A |
| Brand | IBM |
| Condition | Good |
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Mechanical Pencil Lead Refills
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