Ningbo Tongque Machinery Manufacturing Co., Ltd. (FLONPRO) is an export-oriented Hand Spirit Level manufacturer with 15 years of experience in the power tools industry. Operating a 10,000 sq.m. facility near Ningbo and Shanghai ports, we produce a full range of spirit levels for construction, installation, and industrial alignment tasks. Our line includes magnetic levels, heavy-duty die-cast aluminum levels, compact mini levels, and pocket-sized models — each engineered for accuracy, durability, and job-site reliability. We support OEM and ODM projects with rigorous quality control from raw material inspection to final calibration.
Our Hand Spirit Level Range
We supply eight distinct models under the GQ series, each designed for specific measurement tasks and user preferences. The table below summarises the available types, key dimensions, and primary application fit.
| Model |
Size / Profile |
Key Feature |
Best For |
| GQ-S5960 |
20×49 mm |
High-visibility vials, magnetic base |
General construction, metal framing |
| GQ-S980 |
Heavy-duty profile |
High-definition vials, reinforced frame |
Heavy industrial alignment, steel erection |
| GQ-S860AB |
17.5×52 mm |
Ultra-compact, magnetic base |
Tight spaces, electrical cabinets, machinery setup |
| GQ-S960B |
20×49 mm |
Ultra-portable, pocket-sized, magnetic |
On-the-go checks, maintenance, HVAC |
| GQ-S2008 |
Professional-grade |
Magnetic, precision-ground base |
Precision installation, machine leveling |
| GQ-985-1 |
Solid die-cast aluminum |
Heavy-duty, non-magnetic option |
General carpentry, concrete formwork |
| GQ-G18 |
Large handle design |
Solid die-cast aluminum, ergonomic grip |
Frequent handling, gloved operations |
| GQ-G19 |
Aluminum alloy solid core |
Neodymium magnet, high holding force |
Vertical steel columns, pipe racks |
Application Fit and Material Considerations
Our spirit levels are used across construction, metal fabrication, machinery installation, and facility maintenance. The choice of model depends on the working surface and required accuracy:
- Magnetic base models (GQ-S5960, GQ-S980, GQ-S860AB, GQ-S960B, GQ-S2008, GQ-G19) attach securely to ferrous surfaces, freeing both hands for marking or adjustment.
- Non-magnetic die-cast aluminum levels (GQ-985-1, GQ-G18) are preferred for non-metallic surfaces such as wood, concrete, or plastic, and where magnetic particles could interfere with sensitive equipment.
- Mini and pocket levels (GQ-S860AB, GQ-S960B) suit confined spaces like electrical panels, conveyor frames, and machine bases.
Critical Specifications and Accuracy
Each level is manufactured with precision-ground vials and machined reference surfaces. While specific tolerance values depend on the model and length, our standard production targets meet or exceed typical industry requirements for general construction and industrial alignment. We can confirm vial sensitivity (arc minutes per division) and base flatness upon request for your specific order.
Configuration Options and Customisation
We offer several configuration choices to match your market or project needs:
- Length: Standard lengths range from compact pocket sizes (approx. 200 mm) to full-length levels (up to 1200 mm or more). Custom lengths can be produced for OEM orders.
- Vial arrangement: Single plumb, single level, or combination (plumb, level, and 45°).
- Magnet type: Standard ceramic magnets or high-holding neodymium magnets (GQ-G19).
- Finish: Anodised aluminum, powder-coated, or bare metal.
- Branding: Laser engraving, pad printing, or custom packaging for OEM/ODM projects.
Quality Assurance and Acceptance Testing
We implement end-to-end quality management in our 10,000 sq.m. factory. Each spirit level undergoes:
- Incoming raw material inspection (aluminum profiles, vials, magnets).
- In-process checks during machining and assembly.
- Final calibration and accuracy verification against reference standards.
- Visual and dimensional inspection per approved sample.
We can provide inspection reports or third-party certification as part of the order agreement.
Packaging, Delivery, and Logistics
Levels are individually packed in blister cards, hanging boxes, or foam-lined cases depending on the model and customer requirement. Bulk orders can be shipped in export cartons or custom retail displays. Our factory is located in Ningbo, within 30 km of Ningbo Port and 150 km of Shanghai Port, enabling efficient FOB, CIF, CFR, or EXW shipments. We coordinate with your designated forwarder or arrange sea, air, or express delivery through our logistics partners.
Information We Use to Configure Your Solution
To prepare an accurate quotation and sample configuration, we need the following project details:
- Target application: Construction, industrial alignment, HVAC, electrical, or other.
- Required length(s) and number of vials (level, plumb, 45°).
- Magnetic or non-magnetic preference.
- Estimated annual quantity and preferred packaging format.
- Branding requirements (OEM/ODM) and any certification needs (CE, etc.).
- Target price point and market region.
Submit these details through our Hand Spirit Level inquiry form, and our technical sales team will respond within 12 hours on weekdays.
Frequently Asked Questions
Q: Can you produce spirit levels with custom lengths and vial configurations?
Yes. We offer OEM and ODM services for custom lengths, vial arrangements, magnet types, and branding. Provide your specifications, and we will develop a sample for approval.
Q: What is the typical accuracy of your spirit levels?
Accuracy depends on the model and length. Our standard production meets typical industry requirements for construction and industrial use. We can confirm vial sensitivity (e.g., 0.5 mm/m or 1 mm/m) for your specific order.
Q: Do you offer magnetic and non-magnetic versions in the same model?
Some models are available in both magnetic and non-magnetic variants. For example, GQ-985-1 is non-magnetic, while GQ-S5960 and GQ-S2008 are magnetic. We can advise on the best option for your application.
Q: What is the minimum order quantity (MOQ) for custom levels?
MOQ depends on the complexity of the customisation. Standard models can be ordered in smaller quantities for sample or trial orders. Contact us with your requirements for a specific MOQ.
Q: How do you ensure the levels are not damaged during shipping?
Each level is individually packed in protective packaging (blister card, box, or foam case). Export cartons are reinforced for sea freight. We also offer custom packaging solutions for retail or bulk distribution.
Related Products and Categories
Our portfolio also includes Products, Power Tools for applications with different operating ranges, interfaces or integration requirements.
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