How to Measure Bolt Size (UK): Metric and Imperial
How to measure bolt size in the UK: read M8 × 40 style sizes, measure diameter, length and thread pitch, and tell metric bolts from imperial UNC and BSW.
Category Plumbing, Electrical and Hardware
How to Measure Tap Size (UK): Tails, Holes and Spouts
How to measure tap size in the UK: check ½ or ¾ inch BSP tails, tap hole size, hole centres, deck thickness and spout reach before buying a replacement.
15mm vs 22mm Copper Pipe: Sizes, Flow and Uses (UK)
15mm vs 22mm copper pipe explained: bore sizes, how much more water 22 mm carries, where each is used in UK homes and how to join them with reducers.
How to Measure Pipe Size (UK): 15 mm, 22 mm and More
How to measure pipe size in the UK: measure the outside diameter with a caliper or paper strip, then match it to 15 mm, 22 mm and other sizes in our chart.