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Parts 76/77: Triangular plates

76Triangular plate, 2½'' 1919-884N°9
77Triangular plate, 1''1920-10104N°8

The parts

Triangular plates, part 76 to the left and 77 to the right
Loading picture Triangularplates

It's very unusual to get a 60 degree angle in a Meccano part, and because of this these parts can come in particularly useful for spacing holes at a quarter-inch spacing (half a hole).  Most of the large triangular plates also have three slotted holes, which can be used along with the edge holes to provide all sorts of spacings for unusual gear combinations.

The small triangular plate is extremely useful as a robust attachment point next to a strip, in addition to being able to have a hole at a quarter-inch spacing.  In the early outfits 7 and L, there were ten of these handy parts, but this was sadly reduced to four in the outfit 10 from 1937.

Chronological variations

The large triangular plate started off with holes only around the edge.  These are very rare as they date only from around 1919.  In 1920, the central hole was added, and in 1921 the three slotted holes were introduced.  This part didn't change in design after 1921, and the small triangular plate didn't change from its introduction.

One thing that part 77 is unusual for, is that it was supplied both in dark green and in dark red during the late 20's.  The dark red is by far the most common, though.

Variations and oddities

None known
Light green spare parts from 1958-63
This image does not belong to the webmasters and is copyright.
Please do not download or copy it for any purpose. It has been
kindly provided for use on this site by the image owner,
William Irwin
Loading picture 76sparepart

Dealer spare parts boxes

Light green spare parts from 1958-63
This image does not belong to the webmasters and is copyright.
Please do not download or copy it for any purpose. It has been
kindly provided for use on this site by the image owner,
William Irwin
Loading picture 77sparepart

The parts above are light green, dating from 1958-64, as identfied by the light green labels on yellow boxes.

Individual part numbers

Part numbers for the parts on this page are as follows:    Unique part numbers
For identification, each variation has been given a suffix to the main Meccano part number. These suffixes consist of a two-character code for the colour, and if there are many variations, a further number and sometimes letter code to identify each variation. See the bottom of the 'Parts' page for further details.

You don't need to worry what the codes are, just click on any one for a photograph.

The button above turns on and off the display of DMS numbers (where they are known). The DMS (Development of the Meccano System, Hauton and Hindemarsh) published in 1972 and added to in 75 and 82, suggested part numbers for every variation of every Meccano part. These numbers aren't perfect, but they are recognised and also referenced in the EMP (Encyclopedia of Meccano Parts, Don Blakeborough).

More about bosses More about stampings More about paint colours

Neils Gottlob's line drawings (where available) can be viewed by clicking the part number at the top of the table.

Nickel plated, holes only around edge19.ni1.ni1
Nickel plated, with central hole20.ni2 
Nickel plated, slotted holes added21.ni 
Early red (pea-red)26.re 
Dark green27 .dg
Dark red27.dr.dr
Medium red (pre-war)33.mr1 
Medium green33.mg1.mg1
Medium green (post-war stamped)48.mg.mg
Light green58.lg.lg
Nickel plated64? .ni
Zinc plated ¹67? .zn
Dark yellow79.dy.dy
Dark blue79 .db

Note: ¹  The rarer zinc plated parts have varying introduction dates, sometimes considerably later than the start of zinc plating on the more common strips in 1966. 

Please send us pictures of missing parts! Hints and tips for pictures
Take a picture of the part in very good light, preferably on a plain yellow background, without a flash but with a tripod.
Ideally, trim the picture to about 150 pixels per inch of the Meccano part (unless the part is particularly big or small), save it as a reasonably good quality jpg file with a filename of exactly the part number, for example 19b.ni1.jpg, and email it to us by clicking on 'Contact us' at the top of the page. Thanks!

Further information

Ernst Leuthold      (at 3:05pm, Fri 7th Aug, 09)

Part 76 exist also in matt black,part 77 in orange,
mission universe sets 1997.
regards ernst

Dick Watson      (at 3:21pm, Fri 28th Dec, 07)

We have not a digital camera, so that it may be a week or so before we use a film up or my son comes back with the mobile phone with a camera.

Dick Watson      (at 10:22am, Thu 27th Dec, 07)

I have a couple of pre-war 76s in medium red which came with other parts (including red braced girders) from, I think, a 1933 medium red & green 5a.

Reply: Brilliant (and logical, too). Could you send me a photo of one please?

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