It is written for inspectors, surveyors, engineers and technicians who have to document readings, which is why the listings lead with part numbers, dimensions and compatibility rather than marketing copy. If a fitment or thread size is not clear from the title, the product page spells it out.nnWhat you will find here: lasers and levels, GPS and survey receivers, water quality meters, moisture and thermal instruments. Quantities are held for contractors buying in job-lot volume, and small one-off orders go out the same way — the price you see is the price for a single unit unless the title states a pack size. Items marked with a sale price are stock we are clearing, not a permanent discount, so check the regular price on the product page before you budget.nnFree ground shipping applies to US orders over $39; everything else is a flat rate calculated at checkout. Most orders leave the dock within 1–2 business days. We take returns for 30 days on unused, resalable goods — sealed adhesives, opened abrasives and cut-to-length items are excluded. Email [email protected] with your order number if a part does not match the listing and we will sort out the correct one.