Spirit level Hultafors Aluminium SM — line level, 0.3 m length, 300 mm width

Hultafors Spirit level Aluminium SM is a compact 0.3 m line level designed for reliable horizontal and vertical alignment in carpentry, installations and general measuring tasks. The body is made from an aluminium profile with a cross-section of 49 x 21 mm and a 300 mm effective working width, giving a lightweight but rigid tool weighing 520 g. The unit includes highly transparent, crush‑proof block vials filled with a low‑viscosity coloured oil mixture that resists ultraviolet light, temperature fluctuations and static charge, ensuring stable bubble movement and fast visual checks.

Advantages

The aluminium construction provides a good balance of strength and low weight for handheld use and transport, while the compact 0.3 m length makes the level convenient for use in confined spaces. Block vials are designed for durability and clear readability; the vial radius of 200 mm delivers a sensitivity of 10 mm/m for accurate alignment. Tolerances are specified as ±0.75 mm/m in the normal position and ±1.0 mm/m when used upside down, enabling predictable precision for everyday measuring tasks.

Suitable for

• Carpentry and joinery tasks where a compact line level is needed
• Installation work such as fitting shelves, cabinets and fixtures
• Plumbing and heating checks requiring quick horizontal or vertical verification
• General on‑site measuring and alignment in tight spaces

Key specifications

• Type: line level
• Length: 0.3 m (300 mm)
• Profile cross-section: 49 x 21 mm
• Working width: 300 mm
• Material: aluminium
• Weight: 520 g
• Vial type: crush‑proof block vials (horizontal and vertical)
• Vial radius: 200 mm (sensitivity 10 mm/m)
• Tolerance: ±0.75 mm/m (normal), ±1.0 mm/m (upside down)
• Vial fluid: low‑viscosity coloured oil mixture, UV and temperature resistant, anti‑static

How to use

Place the aluminium SM line level on the surface to be checked so that the vial window is clearly visible. For horizontal checks, set the level on the edge or flat surface and observe the bubble in the horizontal vial; adjust the workpiece until the bubble centers between the marked lines. For vertical alignment, use the vertical vial and align the item until the bubble is centered. For repetitive tasks, flip the level and verify readings to confirm tolerance; the specified accuracy differs slightly when the level is used upside down. Clean contact surfaces before measuring to avoid false readings caused by debris.

Usage recommendations

Handle the level carefully to avoid hard impacts that could damage the vials or deform the aluminium profile. Store the tool in a dry place away from prolonged direct sunlight to preserve vial fluid properties. For best results, periodically check accuracy against a known reference surface and recalibrate or replace the level if tolerances are exceeded.