Tripods and Extension Poles

Choosing a tripod depends on the type of instrument and the kind of work. A standard aluminium tripod with telescopic legs and a working height of about 1.0–1.7 m fits levels and lasers with a 5/8" connector and holds up well to daily carrying on site. For measurements that need maximum stability, a heavier wood tripod is the better choice, since it damps vibration more effectively. If the thread doesn't match, an adapter converts 5/8" to 1/4".

A surveying tripod has a sturdier build than a photo tripod — thicker legs, stronger clamps and a 5/8" thread instead of the 1/4" or 3/8" typical for photography. Load capacity usually reaches a dozen or so kilograms, enough to safely hold a level or a rotary laser in wind. The head is flat, with a mounting plate under the instrument, rather than a ball head as on photo tripods, which keeps the level steady.

An aluminium tripod usually weighs about 2–3 kg, is easy to carry and cheaper, good for frequent moves on site. A wood tripod weighs about 4–6 kg, but its greater mass keeps a steadier level in longer measurements and gusts of wind, and wood reacts less to temperature changes. Surveyors taking elevation measurements choose the wood version, construction crews the lighter aluminium one.

A leveling staff, also called a leveling rod, is a graduated measuring batten with markings every 1 cm or every 5 mm, typically 3–5 m long, read through a level's telescope or a laser detector to determine the height difference between points. It is essential for leveling a site, checking the fall of installations and setting out foundation levels. Without a staff, a level shows only a reference plane — only its reading gives an actual height value.

For interiors and small renovations, a 3 m telescopic staff is enough — easy to manoeuvre in tight spaces. For typical construction work and setting out levels, a 4 m staff works well and is the most common choice for general building crews. For large areas — roads, halls, sites with large height differences — a 5 m staff is needed, collapsing for transport into sections of about 1 m.

Most laser mounts have a standard 5/8" threaded connector, which fits most cross-line and rotary lasers on the market, regardless of brand. Some compact lasers have a 1/4" thread — in that case you need a 5/8" to 1/4" reducing adapter. A well-matched magnetic, wall or pole mount safely holds a laser weighing up to about 2–3 kg.

Set the tripod on stable ground, spread the legs symmetrically and level the head with the bubble vial — adjusting the legs sets the working height, typically 1.0–1.7 m. Screw the mount, or the laser's own base, onto the 5/8" thread in the head, tightening it firmly but without force. Once fitted, switch on the laser and check the self-leveling function, usually within about ±4° — a blinking diode means the tripod is standing too far out of level.

Most surveying tripods, Nivel System included, have a universal 5/8" thread — a standard also used by Topcon and Dr. Schulze — so a tripod from one brand usually fits a level from another. Exceptions are a handful of compact instruments with a 1/4" thread, needing an adapter. When choosing, check the working height, typically 1.6–1.7 m, and leg load capacity, since heavier rotary levels need a sturdier build.