Precision visual measurement made simple, accurate, and affordable for workshops, tool rooms, R&D labs, and quality control departments.
About RB Metrology
In 2008, RB Metrology started exporting and wholesale supplying tremendous quality with subcategory products of Contour Measuring Machines, Conveyor Systems, Coordinate Measuring Machine, Laser Marking Automation, Led Lens Flood Light, Profile Projector, Video Measuring Machines, Street Light, and many testing equipments.
Business Type: Exporter, Wholesale Supplier / Wholesaler
Year of ESTD: 2008
Major Markets Cover: India
What is a Profile Projector?
A Profile Projector(also called an optical comparator) is a non-contact optical inspection system that magnifies the silhouette (profile) and surface features of a part onto a ground-glass screen for precise measurement. By projecting the part’s image at calibrated magnifications (commonly 10×, 20×, 50×, 100×), users can evaluate dimensions, angles, radii, thread forms, gears, cams, punches, and complex contours with high repeatability.
“Profile Projectors” Key Features & Specifications
Core Feature Set
High-contrast projection optics with achromatic lenses to minimize distortion.
Illumination in both transmitted (contour) and reflected (surface) modes, typically LED or halogen.
Large precision screen (300–600 mm) with fine reticles, crosshairs, and protractor overlays.
XY measuring stage with micrometer drives, linear scales, and optional digital readout (DRO).
Rotary measuring capability for angle and thread analysis using a goniometer or digital angle encoder.
Edge detection (manual or automatic) for faster, repeatable measurements.
Data output via USB/RS-232 for SPC and quality records.
Robust build with vibration-damped base to preserve accuracy.
Larger screens simplify overlay comparison on big parts.
Magnification
10×, 20×, 50×, 100× (interchangeable)
Choose based on part size and detail granularity.
XY Travel
150×100 to 300×200 mm
Covers small gauges to medium components.
Measurement Resolution
0.001–0.005 mm (with scales/DRO)
Fine resolution for toolroom tolerances.
Angle Resolution
1′–5′ (arc-minute)
High precision angular measurement on protractor screen.
Illumination
LED/Halogen (Reflected + Transmitted)
Cool LED light enhances edge sharpness and lamp life.
Power
100–240 V AC, 50/60 Hz
Worldwide compatible supply.
Software
Optional measurement & SPC suite
For report generation, tolerancing, and data export.
Size / Dimensions
Profile projectors are offered in compact benchtop footprints for small workshops and in floor-standing formats for larger parts.
Form Factor
L×W×H (Approx.)
Weight
Best For
Benchtop 300 mm
800×600×1000 mm
80–140 kg
Job shops, training, quick inspections
Benchtop 400 mm
950×700×1150 mm
120–180 kg
Toolrooms, die shops, precision parts
Floor-standing 500–600 mm
1200×900×1800 mm
250–450 kg
Production QC, larger components
Materials & Build Quality
Cast-iron / Granite bases for thermal stability and vibration damping.
Hardened, ground guideways on XY stages for smooth, backlash-free travel.
Multi-element coated optics to maximize contrast and minimize chromatic aberration.
Aluminum/steel housings with matte interiors to suppress stray light.
Solid spindle and fine-pitch drives for micrometric control.
Design / Type Variations
Horizontal vs. Vertical Projection
Horizontal projectors project the image sideways; ideal for long shafts, turned parts, gears on centers, and cutting tools. Vertical projectors project downward; best for flat parts like gaskets, stampings, PCBs, and small plastic/metal components.
Illumination & Optics Options
LED Illumination: cool, long life, low maintenance.
Halogen Illumination: warm color temperature, lower upfront cost.
Telecentric lenses: reduce perspective error for precise edge measurement.
Note: Prices vary with lens sets, encoder class, software, fixtures, and warranty. Request a tailored quotation for the best landed wholesale price.
Maintenance Tips for Long-Term Accuracy
Daily / Weekly
Clean the screen, stage, and lenses with non-abrasive wipes and approved optics fluid.
Check illumination intensity and uniformity; keep vents dust-free.
Verify DRO zero and crosshair alignment on a reference block.
Monthly
Inspect drive leadscrews and guideways; remove chips and dust.
Validate magnification using a certified glass scale or grid.
Back up measurement programs and SPC templates.
Quarterly / Annually
Professional calibration against traceable standards (NABL/ISO).
Replace aging lamps (if halogen) and verify color temperature consistency.
Check stage flatness and adjust backlash if required.
Usage Best Practices
Warm-up the light source for stable readings.
Avoid direct touching of optics; use gloves when handling lenses.
Mount on a stable, vibration-free table or floor to minimize measurement noise.
Frequently Asked Questions
Q1. How do profile projectors compare to video measuring machines?
Profile projectors excel at quick silhouette checks and angular measurements with minimal setup. Video measuring machines are powerful for automated, multi-feature programs and sub-micron resolution but come at higher cost and complexity. Many shops use both.
Q2. Can I measure surface features, not just outlines?
Yes. With reflected illumination and appropriate magnification, you can inspect surface features, chamfers, and engraving. For micro-surface metrology, consider adding a vision system or a telecentric lens.
Q3. Which magnification should I start with?
Most applications are covered by 10× and 20×. Add 50× for small radii and 100× for microfeatures or thread root detail.
Q4. Do you supply overlays and fixtures?
Yes. RB Metrology provides standard and custom overlays (gears, threads, protractors) and fixtures such as V-blocks, centers, clamps, and rotary stages to match your parts.
Q5. Is LED illumination worth it?
LED offers cooler operation, stable intensity, and long life—reducing maintenance and improving edge sharpness. It is recommended for most buyers.
Why Buy from RB Metrology?
Proven Since 2008: Serving India’s manufacturing ecosystem with reliable metrology solutions.
Wholesale Advantage: Bulk pricing, fast dispatch, and consistent inventory for repeat orders.
Breadth of Portfolio: From Profile Projectors to CMMs, VMMs, and contour measuring—scale with one partner.
Calibration & Service: Annual maintenance contracts and traceable calibration options.
Contact & Ordering
Ready to evaluate models, receive a demo, or get a wholesale quote for India? Share your part drawings, maximum part size, target tolerances, and throughput. We’ll recommend the optimal Profile Projector configuration—screen size, magnification set, stage travel, fixtures, and software—aligned with your budget and compliance needs.
Business Type: Exporter, Wholesale Supplier / Wholesaler
