Granite Parallel Rule (also known as Marble Parallel Rule) is a high-precision precision measuriol. The core of maintenance lies in preventing impact, corrosion, and temperature/humidity fluctuations, as well as frequent cleaning and regular calibration. The following are systematic daily maintenance tips:
I.ge Standards (Prevent Damage)
Handle with care; strictly prohibit impact.
Granite is brittle; absolutely forbidden to drop, strike, apply heavy pressure, or collide with metal workeces/tools.
When handling, support the main body with both hands; do not lift by one side to avoid breakage.
When measuring, ensure the workpiece is completely stationary to premic friction from scratching the working surface.
Standard operation; avoid overloading.
Use only as a measurement reference; do not use as a pad or fixture.
Do not exceed rated loadribute heavy objects evenly; prohibit localized concentrated pressure.
Wear gloves to avoid direct contact.
Wear lint-free cotton gloves during operation to prevent sweat, oil, and fingerprints from corrodiion surfaces.
II. Daily Cleaning (Maintain Precision)
Daily Cleaning Procedure
First, use a soft-bristled brush or lint-free cloth to sweep away dust and metaavings.
Then, dampen a soft cloth with neutral cleaner or dedicated granite cleaner and wipe gently.
Finally, wipe thoroughly dry with a clean dry cloth to leave no water marks.
Stareatment Prohibitions
✅ Allowed: Neutral cleaner, industrial alcohol, dedicated stone care solution.
❌ Strictly Prohibited: Vinegar, lemon juice, strong alkali, g acid, hard-bristled brushes, sandpaper (will corrode and scratch the surface).
Oil Stains: Clean immediately with neutral cleaner; for stubborn stains, use a dedicated stain rver paste to polish gently.
III. Environment & Storage (Stabilize Dimensions)
Temperature and Humidity Control
Ideal: Temperature 20±5°C, umidity 40%–60%.
Avoid: Direct sunlight, direct air conditioning airflow, proximity to heat/cold sources, sudden temperature changes.
Long-term Storage: Place horizontally on a wox or rubber pad; do not allow direct contact with metal or concrete floors.
Dust and Moisture Prevention
Immediately cover with a dedicated dust cover when not in use (prevenust wear and moisture erosion).
Use desiccant when humidity >70%; check regularly for mold spots.
IV. Regular Maintenance (Extend Lifespan)
Surface Protection (Evy 6 months)
After cleaning and drying, apply granite-specific sealer evenly to form a stain-resistant barrier.
Apply a thin coat of rust-proof oil to metal accessories (pins, boltsnt corrosion.
Precision Calibration (Critical)
High-frequency use: Every 3 months; General use: Every 6–12 months.
Send to a professional metrology institution forlibration of parallelism and flatness using a laser interferometer.
Stop using immediately if out of tolerance and send for repair; do not use while faulty.
Minor Damage Repair
Shallw scratches: Polish gently with W2.5–W5 diamond grinding paste.
Small pits/chips: Non-working surfaces can be repaired with epoxy resin; damage to working surfaces be sent for professional refurbishment immediately.
V. Prohibition List (Must Remember)
❌ Do not blow directly with compressed air (dust will embed into pores).
❌ Do not scrapeking surface with metal tools.
❌ Do not store with files, wrenches, drill bits, etc.
❌ Do not measure without cleaning.
❌ Do not store vertically for aong time (prone to deformation and breakage).
Summary: Granite Parallel Rule Maintenance Slogan — Handle with care, wear gloves, neutral cleaning, constant temperature and humidity, keep covered, regularcalibration. Strict execution can maintain precision for a long time and extend service life.
