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Blue aluminium I-beam level, 48 inches long, three vials

Westward

Westward 4MRV8 I-Beam Level Aluminum 48" .001 accuracy

SKU CH-HN9C-BEXB1 MPN 4MRV8

48-inch aluminum I-beam level with three vials and 0.001 accuracy for precise alignment

  • Total length48 in (122 cm)
  • Product typeLevel Gauges
  • 48 inch reach covers tall spans without repositioning
  • Aluminum I-beam frame resists corrosion and stays lightweight on the job
  • Three vials including two plumb give level and vertical checks in one tool
  • .001 accuracy delivers precise alignment for critical layouts
  • Non-magnetic body avoids interference near steel structures

Precision Framing Tool

The Westward 4MRV8 is a 48" aluminum I-beam level built for tradespeople who require exact alignment on structural work. Its .001 accuracy specification supports critical layout tasks where deviation cannot accumulate across long spans. The nonmagnetic body prevents interference when working near steel assemblies or electrical conduit.

Thermal Stability and Handling

Aluminum construction resists corrosion and rust while keeping the tool light enough for extended overhead use. The material does not retain heat from direct sunlight the way steel can, so vial readings stay consistent on outdoor jobsites. No moving parts or electronics mean there is no power draw or operational noise to manage.

Vial Configuration Benefit

Three vials — two plumb and one level — let you check horizontal and vertical planes without repositioning the tool. This arrangement reduces the chance of transcription errors when transferring marks between faces. The blue frame colour improves vial visibility in bright ambient light, speeding up confirmation on fast-paced sites.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $21.99
Typical for this category: the median of 2,474 items is $23.99.

Specifications

Product
Brand nameWestward
Model name4MRV8
Product typeLevel Gauges
Size & build
Total length48 in (122 cm)

Questions about this item

How do I verify the .001 accuracy on this 48" aluminum I-beam level?

Place the level on a flat surface, note the bubble position, rotate it end-for-end, and confirm the bubble returns to the same spot within the marked lines.

What maintenance will the three vials on this Westward 4MRV8 require?

Keep the vial covers clean and free of scratches; if a bubble becomes erratic or the fluid clouds, the vial assembly cannot be serviced and the level should be replaced.

What is the first limitation that appears during sustained use of this 48" aluminum level?

Aluminum expands with temperature changes, so prolonged exposure to sun or heat can shift readings beyond the .001 tolerance before any physical wear occurs.

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