Why is the divider on the industrial tester & tools hard briefcase set at 12 mm?

A: Below 12 mm it buckles under side load and the instrument floor loses its centre support; above it, the bay narrows under 180 mm and a bench unit touches the side wall.

Is the 130 mm bay height clear space or does it include foam?

A: It is clear space from the bay floor to the underside of the lid foam, so 3 mm of compression leaves about 127 mm working height.

Why a round seat for the cable instead of a square well?

A: Square corners catch the coil rim and cost a second motion; a φ110 mm seat leaves 5 mm around the coil so a finger can get in from any direction.

Does an IP65 case let water in when opened in rain?

A: Yes. IP65 assumes a clamped lid; open, only the rim lip remains, and a mouth facing up collects water whatever the sealing grade.

Industrial tester & tools hard briefcase

Quick answer: Industrial tester & tools hard briefcase splits 425 × 305 × 130 mm into two zones: a 130 mm instrument bay, 6 tool slots and a φ110 mm reel seat.

Splitting the industrial tester & tools hard briefcase into two zones
A 130 mm clear height over the instrument bay
Six tool slots and what the 12 mm divider does
A φ110 mm cable reel seat and the pre-close check
Drop at 1.0 m, IP65 and 4000 open-close cycles
FAQ

1. Splitting the industrial tester & tools hard briefcase into two zones

An instrument and a wrench want opposite things from one cavity: the instrument needs 10 mm of clearance on four sides so foam never touches its panel, the tool needs contact to stay put. The industrial tester & tools hard briefcase splits 425 × 305 × 130 mm along that line.

Outside first: 480 × 360 × 170 mm, a 3.8 kg shell and 8.2 kg of load give 12 kg all-up, still a one-hand carry. Add 40 mm outside and the case needs wheels, so the handle stops carrying and starts towing.

The 12 mm divider is where the two demands meet: it blocks a raised knob on one side, stops the longest tool on the other, and both loads arrive on the same face.

Zone inside the case	What it holds, by form	Clearance value
Instrument bay	Bench unit with knobs on the face	130 mm clear, 10 mm all round
Tool bay	Long and blocky hand tools	6 slots, 62 mm wide each
Cable seat	Coiled cable and adaptors	φ110 mm round, 55 mm deep

The order matters: the 130 mm bay is fixed first, the tool bay is cut from what remains, and the cable seat takes the strip by the wall.

2. A 130 mm clear height over the instrument bay

130 mm is the tallest instrument plus 10 mm. That allowance is not tolerance but lid foam: closed, the foam presses 3 mm onto the panel, while 8 mm makes a knob the load path.

Industrial tester & tools hard briefcase close up, lid open, black egg-crate foam inside the lid, grey foam slots in the base, shelves behind

A gland hole is the fastest way to lose IP65, so the industrial tester & tools hard briefcase keeps cable inside, coiled in the round seat.

The φ110 mm seat buffers both bays: coiled cable lands at 95 mm to 105 mm outside diameter, leaving 5 mm for a fingertip, and at 55 mm deep two coils sit level with the bay floor.

What it holds, by form	Retention	Movement allowed
Bench unit	Foam pocket plus two ribs	1.5 mm or less
Long-shaft tool	Clip jaw	2 mm or less
Cable coil	Round seat plus cap	1 mm or less

On the industrial tester & tools hard briefcase those figures follow drop height: at 1.0 m a unit moving 3 mm strikes the pocket wall, while 1.5 mm leaves foam travel to absorb it.

3. Six tool slots and what the 12 mm divider does

Six slots come from clear width. A 12 mm divider runs the 425 mm length and splits the cavity into a 190 mm instrument bay and a 103 mm tool bay; with foam at both ends about 400 mm is left, and 62 mm per band fills it with six. Eight bands drop clear width under 50 mm.

On the industrial tester & tools hard briefcase the 12 mm divider props the instrument floor at mid-span, shields the panel from hard tool edges, and splits lid foam pressure into two lines so the foam cannot shift as a block.

A 3.2 mm wall beside a 12 mm divider is not unbalanced: the wall bends and needs section depth, the divider is crushed sideways and needs thickness.

Depths differ too: raising the tool bay floor 15 mm puts the highest point of a diagonal shaft at 115 mm.

4. A φ110 mm cable reel seat and the pre-close check

The pre-close check cannot be skipped. A coil that has not dropped into its φ110 mm seat sits 6 mm proud, so the lid presses the coil instead of the gasket.

Industrial tester & tools hard briefcase pair open on a meeting table, shelving of blue orange and black cases along both walls, wood floor

The industrial tester & tools hard briefcase carries two 320 N latches and a 320 N handle, the same range because both load in the worst case: one-hand carry, case striking a door frame.

Clearance value	Number	Basis
Instrument bay height	130 mm	Tallest unit plus 10 mm compression
Divider thickness	12 mm	Bending support plus side isolation
Tool slots	6	Clear width not below 60 mm
Cable seat	φ110 mm	Coil diameter plus 5 mm finger space

5. Drop at 1.0 m, IP65 and 4000 open-close cycles

1.0 m is the industrial tester & tools hard briefcase baseline, 200 mm under a transit case, because the handle rides lower. A bottom corner is worst: impact reaches the divider joint, and without a fillet at the 12 mm root the crack starts there.

IP65 and IP67 differ once: both are level 6 for dust, while water goes from 1 m for 30 min to a jet. An 8 mm gasket at 25% compression covers the jet case.

4000 cycles at ten a day is about 400 days. Hinge clearance past 0.5 mm makes the lid rock, shears the gasket, and ends life before the latch does.

At −15 °C the shell keeps about 70% of its impact strength; at 60 °C foam compression set eats 1 mm to 2 mm of the bay allowance.

Conclusion

The industrial tester & tools hard briefcase is laid out bay first: 130 mm fixes the instrument bay, the rest cuts into 6 tool slots, the 12 mm divider carries both loads, and the φ110 mm reel seat closes the last gap. Compare divider thickness, bay height and one slot's clear width; once those three agree, the two kinds of contents stop interfering.