Single plumb is where the level only has 2 vials, double plumb is where the level has 3 vials.
Brian Hyde Ltd is a leading distributor of quality tools in the United Kingdom with over 60 years' experience and a reputation for excellence.Please note: Brian Hyde Ltd operates a business to business (wholesaler, distributor or retailer) sales policy.We do not sell to the general public although end users of our products are very important to us. Thank you.