A box section level has a closed rectangular body, which makes it stiffer and more resistant to twisting, so it suits heavier site use. An I-beam level has an open profile that is lighter to carry. Levels lists both types at 1200mm and 1800mm, along with box levels fitted with a handle or a side view vial.
They are short levels for jobs where a long level will not fit. Pocket levels of 78mm and 105mm check small fittings, a 78mm line level hangs on a string line to level across a distance, and a 230mm boat level with a magnetic base holds onto steel sections and pipework while you adjust them.
Choose digital when you need a number instead of a bubble reading, for example setting a fall on drainage or matching a roof pitch. The page lists digital spirit levels at 600mm and 1200mm and a digital box level and angle gauge. For measuring the angle between two surfaces there is a 250mm digital angle finder and a 300mm digital angle rule reading 0-360 degrees.
Steel pocket tapes suit everyday measuring and are listed in sizes such as 3m/10ft x 16mm, 5m/16ft x 19mm and 8m/26ft x 25mm; a wider blade stays rigid further when extended unsupported. For setting out longer distances, Measuring Tapes has steel tapes of 20m and 30m and fibreglass surveyor's tapes of 50m and 100m, which do not rust or kink.
Squares covers several kinds. A combination square with centre head and protractor, listed at 300mm, handles 90 and 45 degree marking and finding centres. Engineer's precision squares, such as 150mm, check machined work. For sheet materials there is a 1200mm adjustable drywall T square and a 1200mm folding square, and a speed square suits roofing and carpentry cuts.
An external micrometer measures over a limited span, so pick the one whose range includes your part size. The page lists external micrometers of 0-25mm, 25-50mm and 75-100mm, and a digital model reading 0-12.7mm (0-0.5 inch). For checking run-out or movement against a fixed reference, dial test indicators are listed, including a metric kit.
Levels and Measuring
Levels and Measuring covers tools for setting out, levelling and checking dimensions on site and in the workshop. Pages include Levels, Measuring Tapes, Templates and Gauges, Squares and Rules. The range takes in box section, I-beam and digital spirit levels up to 2000mm, measuring tapes, fibreglass surveyor's tapes, distance measurers, engineer's squares, adjustable bevels, rules, digital micrometers, dial test indicators, tread depth gauges and sound level meters.
Brands include Draper, Sealey, Abracs, Laser Tools and Sykes Pickavant. For levels, choose a length that suits the work, from 600mm for general use up to 2000mm for longer runs, and consider a digital level where an angle readout is useful. For tapes, match the length and blade width to the distances you measure most often.
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