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Lines & plumb bobs

HCCMLOVE Plumb bob set, 8 oz, 16 ft braided line

Sixteen feet of braided line, which is more than any other bob here carries — wound on a card rather than a reel.

HCCMLOVE eight-ounce steel plumb bob with line board and pencils

HCCMLOVE Plumb bob set, 8 oz, 16 ft braided line

Sixteen feet of braided line, which is more than any other bob here carries — wound on a card rather than a reel.

Stated dimension or range
8 oz / 227 g, with 16 FT (5 m (16 ft)) of nylon braided line. Sixteen feet is the longest bob line on this shelf — the retracting reels carry 14 and 14.5 ft and a steel bob ships 10 ft — and on a stairwell or a two-story drop that difference is the whole job
Material
High-quality steel, stated corrosion-resistant, with a sharp point for calibration. NYLON BRAIDED line, stated — which this shelf's introduction says resists the stretch that makes a twisted line sag differently at each setting
Functions
A FAST Stabilizing DEVICE at the end of the bob, stated to speed up the stabilization of the line. No time is given — the Tajima bobs on this shelf publish six seconds — but the feature is the same idea: this shelf's introduction says weight sets how quickly a bob settles, and a damping device is the other way to get there without adding mass
Body and fittings
A safety cap over the point, stated to make it safer to use, and an anti-slip band at the waist of the bob to prevent it slipping off the line. The cap is the same answer to the same problem as the elastomer tip guard on another bob here: the point is what a plumb bob dies of
Supplied
The bob, a line board holding the 16 ft of braided line, TWO pencils and a sharpener. The line board is a card rather than a reel: the line is unwound by hand and rewound by hand, and the board can be held or weighted down to fix the top of the line, which is how HCCMLOVE describes using it
Reference and mounting
Nylon clips to adjust the line length for different heights, stated. No magnet, no pin and no hook: the top of the line is fixed by holding the board or weighting it, which is the simplest arrangement on this shelf and the least secure
Amazon reference
B0C86R3MNR
EAN
0765365646538
  • Sixteen feet of line, the longest bob cord on this shelf
  • Braided nylon, which resists stretch
  • A line board, not a reel: wound and unwound by hand

Best for: A tall drop on a budget, where sixteen feet of line matters more than a reel to wind it on

≈ $15
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Specifications

Stated dimension or range
8 oz / 227 g, with 16 FT (5 m (16 ft)) of nylon braided line. Sixteen feet is the longest bob line on this shelf — the retracting reels carry 14 and 14.5 ft and a steel bob ships 10 ft — and on a stairwell or a two-story drop that difference is the whole job
Material
High-quality steel, stated corrosion-resistant, with a sharp point for calibration. NYLON BRAIDED line, stated — which this shelf's introduction says resists the stretch that makes a twisted line sag differently at each setting
Functions
A FAST Stabilizing DEVICE at the end of the bob, stated to speed up the stabilization of the line. No time is given — the Tajima bobs on this shelf publish six seconds — but the feature is the same idea: this shelf's introduction says weight sets how quickly a bob settles, and a damping device is the other way to get there without adding mass
Body and fittings
A safety cap over the point, stated to make it safer to use, and an anti-slip band at the waist of the bob to prevent it slipping off the line. The cap is the same answer to the same problem as the elastomer tip guard on another bob here: the point is what a plumb bob dies of
Supplied
The bob, a line board holding the 16 ft of braided line, TWO pencils and a sharpener. The line board is a card rather than a reel: the line is unwound by hand and rewound by hand, and the board can be held or weighted down to fix the top of the line, which is how HCCMLOVE describes using it
Reference and mounting
Nylon clips to adjust the line length for different heights, stated. No magnet, no pin and no hook: the top of the line is fixed by holding the board or weighting it, which is the simplest arrangement on this shelf and the least secure
Amazon reference
B0C86R3MNR
EAN
0765365646538

What the maker puts in writing

  • 8 oz (227 g) steel, corrosion-resistant · sharp point for calibration
  • 16 ft (5 m) of nylon BRAIDED line on a line board
  • “The fast stabilizing device is designed at the end of the plumb rite plumb bob to speed up the rapid stabilization of the rope”
  • A safety cap over the head · an anti-slip belt in the middle to prevent it falling off
  • Nylon clips to adjust the length of the rope for different heights
  • Two woodworking pencils and a sharpener included

No settling time. No bob dimensions. No magnet, pin or hook.

Sixteen feet, the longest bob line here

And the drop is what a bob is for.

Ten feet reaches one story. Sixteen covers a stairwell, a two-story elevation from a landing, a lift of scaffold, or a high ceiling with the board held well above the mark.

The retracting reels on this shelf carry fourteen and fourteen and a half. The cheapest steel bob ships ten.

And the line is braided, so the extra length does not come with extra stretch.

A damper instead of more mass

Which is the same idea Tajima sells and publishes a number for.

This shelf’s introduction: weight sets how quickly a bob settles.

Eight ounces is at the light end of this shelf, so HCCMLOVE puts a stabilizing device at the tail to bleed energy out of the swing rather than letting it oscillate.

The mechanism is described. The time is not — where two bobs on this shelf publish six seconds.

A cap over the point

The same answer as the elastomer tip guard on another bob here.

The point is what a plumb bob dies of: one drop onto concrete rolls it over, and a rolled point marks beside where the line falls rather than under it.

A cap costs nothing and solves it. One other bob here answers the same problem with four spare tips.

And a card, not a reel

Which is slower, and honest.

A line board holds the cord in a figure of eight, unwound and rewound by hand. A sixteen-foot drop is a minute of winding at each end; the retracting reels here take a second.

What the board does better is hold the TOP of the line: flat against a ceiling, or weighted on a floor.

The bobs here with magnets, pins and hooks fix the top properly and cost twice as much.

Availability

On sale at around 15 € on the American Amazon store at the time of checking.

Prices and availability are what Keepa reported on the date this page was updated; both move.

Prices quoted in this text were read on 8 October 2026. The live price is at the top of the page.

What gets asked here

Why does sixteen feet matter?

Because the drop is what a plumb bob is for, and ten feet only reaches one story. Sixteen feet covers a stairwell, a two-story elevation from a landing, a lift of scaffold or a high ceiling with the board held well above the mark — and it is the longest bob cord on this shelf, where two retracting reels carry 14 and 14.5 feet and the cheapest steel bob ships 10. The line is also braided, so the extra length does not come with extra stretch. It is wound on a card, which is the part to live with.

What is a "fast stabilizing device"?

A damper, on the evidence of the description: something at the tail of the bob that bleeds energy out of the swing instead of letting it oscillate. The idea is the same one Tajima sells as quick stabilizing and publishes as six seconds; HCCMLOVE describes the mechanism and gives no figure. This shelf's introduction says weight sets how quickly a bob settles — a damper is the way to get a light bob to settle like a heavy one, which matters here because eight ounces is at the light end of this shelf.

Is a line board a problem?

It is slower and it is honest. A card or board holds the line in a figure of eight and is unwound and rewound by hand — so a sixteen-foot drop is a minute of winding at each end, where a retracting reel on this shelf takes a second. What the board does better is fix the top of the line: it can be held flat against a ceiling or weighted on a floor, which is how HCCMLOVE describes using it, and it costs nothing. The bobs here with magnets, pins and hooks fix the top properly and cost twice as much.

More mason lines and plumb bobs

  • Johnson five-ounce hexagonal machined steel plumb bob

    Johnson Hexagonal steel plumb bob, 5 oz

    The lightest bob here, and the only one sold for the job a surveyor actually keeps one for: centering a tripod.

    Stated dimension or range
    5 oz — the lightest bob on this shelf, where the heaviest is 21 oz. Light is the right choice for a tripod hook, where the bob hangs a few inches and settles in a moment; this shelf's introduction says a heavy bob steadies faster and swings less in a draft, and both of those matter on a long drop rather than a short one
    Functions
    Stated to be used with JOHNSON TRIPODS to center them while using optical and laser instruments. It is the only bob on this shelf sold for that job, and it is the job a surveyor keeps a bob for: an instrument reads angles from wherever its tripod actually stands, so a theodolite or a level over a station mark has to be positioned by dropping a point from its own center
    Material
    A hexagonal MACHINED steel body with a corrosion-resistant plated finish, stated. Machined rather than cold-drawn — which is the other bob on this shelf — means turned to shape, so the concentricity of the point to the body is a machining tolerance rather than a drawing one
    Body and fittings
    A hexagonal body stated to prevent it rolling off, and a removable cap stated to allow quick, easy and accurate Centered string installation. Centered is the operative word: a bob whose string is not on the axis hangs at a slight angle and its point lands beside the truth
    Supplied
    The bob. No line, no reel and no case — so the string is bought separately, and the cap is what makes that a specified job rather than a knot round a hook
    Also stated
    Named for foundation contractors, excavation contractors and surveyors, for lining up and transferring points. No settling time, no dimensions, no tip guard and no spare tip is published
    Amazon reference
    B00002N7U8
    EAN
    0049448050000
    • Five ounces, which is right for a tripod hook
    • The only bob here stated for centering a tripod
    • No line supplied at all

    Best for: Centering a tripod over a station mark, and transferring points indoors

    ≈ $9
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  • kwb red braided mason line wound on its card

    kwb Braided mason line, 50 m (164 ft) × 1.2 mm (0.05 in)

    The only line here that publishes its strength: 22 decanewtons breaking, about 4.75 kg (10.5 lb) continuous — the figures that decide how hard it can be tensioned.

    Amazon reference
    B00TEAM5TG (identical on 6 markets)
    EAN
    4009319251253
    Stated dimension or range
    50 m (164 ft) × 1.2 mm (0.05 in)
    Mechanism and finish
    braided nylon
    Stated tension
    22 daN
    Stated weight
    ~4.75 kg (10.5 lb) working load
    • Publishes both a breaking load (22 daN) and a continuous working load (about 4.75 kg (10.5 lb))
    • Braided rather than twisted, which resists the stretch that makes a line sag differently at each setting
    • Line only — no plumb bob

    Best for: Setting out brickwork, paving and tiling, where the line is tensioned between two points and has to stay straight.

    Check price on Amazon
  • Stanley lacquered brass plumb bob with its pointed tip

    Stanley Brass plumb bob

    A plain lacquered brass bob — denser than steel for its size, which means a smaller body for the same settling behavior.

    Amazon reference
    DE B0042ADVJQ · US B01MDMGV57 · GB B01MDMGV57 · FR B00009OYGQ · IT B00009OYGQ · ES B01MDMGV57
    EAN
    0076174479737
    Material
    Lacquered brass
    Also stated
    trade catalog reference
    • Brass is denser than steel, so the same mass occupies less space and hangs in a tighter gap
    • Lacquered, so it does not tarnish onto the line or your hands
    • The listing states the material and nothing else — no mass, no line

    Best for: Dropping a vertical in a tight space, where a bulky bob will not hang free.

    ≈ $22
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Elsewhere in the spares drawer

  • SeKi ceramic 5 by 20 millimeter fuses in a row on a workbench

    SeKi Ceramic fuses, 10 A, 5 × 20 mm (0.20 × 0.79 in), ten-pack

    Ten ceramic fuses with all four specifications stated — size, current, voltage and characteristic — which is the only way a replacement fuse can be chosen.

    Amazon reference
    B0CVXQGP7P (identical on 5 markets)
    EAN
    4053171962161
    Stated dimension or range
    5 × 20 mm (0.20 × 0.79 in) ceramic
    Fuse rating
    10 A / 250 V · time-delay (T)
    • All four figures published: 5 × 20 mm (0.20 × 0.79 in), 10 A, 250 V, time-delay
    • Ceramic bodies, which is what a meter's current input normally specifies
    • A 250 V rating is below what many meters specify for the current input

    Best for: The meter whose manual specifies exactly 5 × 20 mm (0.20 × 0.79 in), 10 A, 250 V, time-delay — and no other.

    Search Amazon for this model
  • YUNFOOK DMM-11A multimeter fuses, two in a pack

    YUNFOOK Fast-acting fuse, 11 A, 10 × 38 mm (0.39 × 1.50 in), pair

    The cheapest 1000 V fuse per piece on this shelf, and the only one that names the part number it replaces.

    Stated dimension or range
    10 mm (0.39 in) × 38 mm (1.50 in), stated, and then repeated in inches as 0.41" × 1.50". That is the high-energy instrument format, the same as the Klein on this shelf — and more than the Fluke page gives, which publishes no fuse dimensions at all
    Current rating
    11 A, stated, matching the Fluke and differing from the Klein's 10 A. The listing adds a sentence the other two do not: "Always verify these specifications match your meter's original fuse before installation. Using an incorrect fuse can be a serious safety hazard" — which is this shelf's buying tip, written by the seller
    Voltage rating
    1000 V AC and DC, stated. Both polarities named, which the other two leave implicit. No fuse previously published on this shelf is rated above 690 V
    Breaking characteristic
    Fast-acting, stated, with the reason given: "rapid protection for your meter's sensitive internal circuitry (and for you) in case of accidental overload". No breaking capacity in kiloamps is published
    Body type
    NOT PUBLISHED. Five long bullets and a page of prose, and nowhere does it say ceramic or glass. The shelf's tag line is that a glass fuse in a meter specifying ceramic is not a substitute, and this is a 1000 V part — which is precisely where the distinction bites
    Supplied
    TWO fuses, $11.69, so $5.85 each — the cheapest 1000 V piece on this shelf. The Fluke five-pack is $8.48 each and the single Klein is $15.99. For a drawer that wants one spare rather than four, a pair is the sensible quantity
    Also stated
    A direct replacement for multimeter fuse part number 803293, and stated to suit meters from Fluke, Amprobe, BK Precision and Klein Tools that specify an 11 A / 1000 V fuse, with "check your meter's manual to confirm". It is the only fuse on this shelf that names the part number it stands in for, and it names BRANDS rather than models
    Amazon reference
    B0G8WXL5S7
    EAN
    0716841567298
    • Five eighty-five a fuse, the cheapest 1000 V part here
    • Dimensions in millimeters and in inches
    • No body material: ceramic or glass is never said

    Best for: Keeping spares for an 11 A / 1000 V current input, where the manual gives a part number rather than a brand

    ≈ $12
    Check price on Amazon
  • Fieldpiece ST4 dual temperature meter with rubber boot and two thermocouples

    Fieldpiece Dual type K thermometer, T1, T2 and T1−T2

    A two-channel delta-T instrument with its own beaded probes, and the only thing on this shelf you can calibrate.

    Type and plug fit
    TWO type K channels, with "wrap tab beaded thermocouples" included. Fieldpiece lists an optional ATWB1 wet bulb thermocouple as a further accessory. An LED indicates a DISENGAGED PROBE — a plug that has worked loose — which is the only answer on this shelf to the problem this shelf's introduction raises about plugs, approached from the instrument end rather than the probe end
    Probe style
    WRAP-TAB BEADED, supplied. A bead is the fast-response style this shelf's introduction assigns to air, and a wrap tab lets the same bead be strapped to a pipe or a fin. Two of them, because the instrument exists to read a difference
    Stated temperature range
    −58 to 2000 °F (−50 to 1300 °C), stated. That is the widest span on this shelf by a long way — 1350 Celsius degrees, against 1100 for the Nxtop probe, 480 for the Klein 69142 and 100 for the Klein 69140 clamp. It is the instrument's range; what any given reading can reach depends on the thermocouple fitted, and the supplied beads are not 1300 °C (2372 °F) parts
    Stated accuracy
    NOT PUBLISHED. What is published instead is more unusual: TWO FRONT-FACE CALIBRATION POTS, one per channel. This is the only instrument on this shelf that can be adjusted by its owner, which is a different proposition from a stated tolerance — it means the reading can be matched to a reference rather than trusted as supplied
    Functions
    Reads T1, T2 or T1−T2, with the difference "in big numbers on the LCD". Min/Max and Hold. Fieldpiece states "great temperature compensation for fast changing environments", which is the figure a two-channel meter lives or dies by and is given here as a claim rather than a number
    Cable length
    Not stated for the supplied thermocouples. No length is published for either of the two thermocouples it ships — the one figure of the hub’s five that this page omits
    Construction and safety
    A rugged rubber boot, and a clear-front case with the ANC6 magnetic hanger included. A magnetic hanger on an HVAC job is not a nicety: it puts the meter on the side of the unit at eye level while both hands are in the cabinet
    Also stated
    386 grams — five times the 78 g (2.8 oz) of the Nxtop, the next heaviest probe here. At $119 it is also the most expensive, and it is a different kind of purchase from the rest of the shelf: four of these five products are probes for a meter you already own, and this one is the meter
    Amazon reference
    B000OLCD9Q
    EAN
    0735090638122
    • Two channels and a direct T1−T2 reading
    • Two calibration pots — the only adjustable thing here
    • No accuracy figure at a hundred and nineteen dollars

    Best for: Finding a temperature split across a coil, where the difference between two readings is the measurement and not either reading alone

    ≈ $119
    Check price on Amazon

All mason lines and plumb bobs