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Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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Giddings and Lewis Math Board Circuit Board Assembly 501-02988-00 / 502-02733-00

$249.00 USD

Sale Sold out

ConditionSurplus - Untested MPN501-02988 Stock #0226-00558

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 5.0 lbs

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This listing is for one used Giddings and Lewis Math Board circuit board assembly, part number 501-02988-00, schematic number 502-02733-00, manufactured by Giddings and Lewis Electronics. The board number A219002 is visible on the component side. This is a large-format single-sided PCB with metal card guide rails installed on both the top and bottom edges and gold-fingered edge connectors along the left and right sides for backplane installation into a compatible Giddings and Lewis CNC control rack. The board is densely populated with rows of 14-pin and 16-pin DIP integrated circuits in black ceramic and plastic packages, consistent with TTL and MSI logic families used in arithmetic processing applications. Yellow labeled ICs marked 185 are visible throughout, along with red disc capacitors used for bypassing. The board functions as a math co-processor or arithmetic logic unit within the Giddings and Lewis CNC machine tool control system, performing floating point or integer arithmetic operations in support of the main CNC processor. This product has been discontinued by the original manufacturer and is available as a surplus replacement. All components appear visually present with no visible signs of burning, cracking, or missing parts. Buyers are responsible for confirming compatibility with their specific machine configuration prior to purchase.

Stock # 0226-558

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.