Casio MJ-120D Plus 12 Digit Desktop Calculator with Check Function for Office, Shop & Business Use

The Casio MJ-120D Plus is a 12-digit desktop calculator built for high-volume, everyday business use. Featuring a large display, dual solar-and-battery power, and a distinctive Check & Correct function that lets you review and fix the last 150 calculation steps, it is the go-to choice for offices, retail counters, and accounting desks across Ludhiana and Punjab. Available at Raju Stationery Mart, it combines Casio's trusted build quality with practical features designed for accurate, fast financial work.

The MJ-120D Plus is engineered for the demands of B2B environments. Its large plastic keys reduce typing fatigue during extended use, making it well suited for bank tellers, shop billing staff, GST accountants, and administrative personnel who perform hundreds of calculations daily. The 12-digit display handles figures up to the crore range without overflow errors — essential for invoicing, stock valuation, and tax computation in busy commercial and institutional settings.

Raju Stationery Mart, Ludhiana stocks the Casio MJ-120D Plus for bulk procurement by schools, colleges, corporate offices, hospitals, and government departments across Punjab. All orders are backed by GST-compliant billing, making it straightforward to claim input tax credit on your stationery and equipment purchases. Established in 1986, Raju Stationery Mart offers reliable local delivery in Ludhiana and serves institutional buyers with competitive bulk pricing.

• Use Check & Correct for error review: Press the Check key after completing a calculation to scroll back through up to 150 steps and identify any entry mistakes before finalising a total.
• Enable solar power in well-lit areas: Place the calculator where the solar panel receives adequate light — this extends battery life significantly in office and shop environments.
• Use the Grand Total (GT) key for running totals: Ideal for adding multiple invoice subtotals or tally sheets without manual re-entry; the GT key accumulates results automatically.
• Apply the Tax key for quick GST computation: Pre-set the GST rate (5%, 12%, 18%, or 28%) so that tax amounts are calculated in a single keystroke during billing.
• Keep keys clean and dry: Wipe with a dry lint-free cloth. Avoid liquid cleaners — moisture can damage the solar cell or key contacts.
• Store away from direct sunlight when not in use: Prolonged direct exposure to harsh sunlight can fade the display and degrade the plastic casing over time.
• Replace the backup battery promptly: When the display dims in low-light conditions, replace the LR1130 cell. Never leave a depleted battery inside the unit as it may leak and corrode the contacts.
• Position on a flat, stable surface: The non-slip feet on the base keep the calculator steady during rapid keystroke sequences — do not use on inclined or vibrating surfaces.