Ideal for carrying out measurements at ceiling outlets: The 90° angle enables you to position suitable vane probes correctly at ceiling outlets. For high ceilings, you can also use the telescope extension in addition to the extendable telescope (both available to order separately) – attaining a total telescope length of 2 metres. Clever: if you already own one of our air velocity probes with universal handle and an extendable telescope, you can easily combine this telescope with one of the 100 mm vane probes with universal handle. Simply add in the optional 90° angle for carrying out measurements at ceiling outlets.