We need more context in order to differentiate between these 3 options.

Outils - Acadie : La vie quotidienne au temps de nos ancêtres- [ Translate this page ]Outils. Glossaire. Agrès : Accessoire de manœuvre, de levage, d'arrimage. Bauge : Mortier fait de terre et de paille. Besace : Sorte de poche que les femmes ...
www.virtualmuseum.ca/Exhibitions/Acadie/tools_f.html - 62k - Cached - Similar pages

Portique d'extérieur SOULET Agres balancoire - Webmarchand.com- [ Translate this page ]Portique d'extérieur: Station bois "Aurade" - 3 agrès - 2.35m SOULET ... Bois Soulet Bilbao SOULET Le modèle Bilbao sera l'outil idéal pour les petits ...
www.webmarchand.com/a/liste_produit/idx/3060710/mot/Agres b... - 70k - Cached - Similar pages

Agrès - Wikipédia- [ Translate this page ]Un agrès est une structure reliée au sol, et où il est possible de pratiquer une activité physique ... Outils personnels. Créer un compte ou se connecter ...
fr.wikipedia.org/wiki/Agrès - 17k - Cached - Similar pages

other option

Poaching from 2 previous answers, just to have the space to comment at greater length.

I feel sure the general sense is indeed some kind of apparatus, and exactly what that is called is going to depend on the exact context; however, as some of Tassia's other questions have related to power lines, I can't help wondering if this isn't maybe some specialist industry term for the special kinds of apparatus that are mounted on the ground (various kinds of gantry / scaffold). Cf. this quote from M/M's Wiki ref.:

"Agrès ... Un agrès est *une structure reliée au sol*, et où il est possible de pratiquer une activité physique..."

Just to be contrary, Tony!

Any chance of fuller context?

Periodic monitoring for the condition-oriented maintenance of WIND TURBINES forms an integral part of the services provided by Germanischer Lloyd WindEnergie (GL Wind). The company of Germanischer Lloyd is now offering inspection by means of ROPE ACCESS TECHNOLOGY (RAT) to give customers an efficient and economical method for performing a rotor blade survey.
ROPE ACCESS techniques are already firmly established as a flexible and efficient way of working on poorly accessible buildings or industrial plants; in recent years, these techniques have proven their worth throughout Germany, especially for work on towers, chimneys and glass facades.
In view of the rapid growth in turbine sizes – a hub height of over 100 metres is no longer a rarity – the conventional use of truck-based telescopic platforms for rotor blade inspections is reaching its limits.
http://www.gl-group.com/scripts/index_fs.html?content=http:/...
Job Title: Cleaning WIND TURBINES in Canada

Job Details:
6 week contract (until end July) cleaning wind turbine towers in Canada. Must be IRATA.

Please apply ONLY if you have extensive experience working on wind turbines.

Please apply ONLY if you have extensive experience working on wind turbines.

Job Title: 6 month contract in Canada (Quebec)

Job Details:
We are looking for level 2 and 3 technicans for a 6 month contract in Quebec. Work is general ROPE ACCESS, but with specific tasks on WIND TURBINES.
http://www.rigg-access.com/rope-access-jobs-main.asp [A job site for rope-access work]

Periodic monitoring for the condition-oriented maintenance of WIND TURBINES forms an integral part of the services provided by Germanischer Lloyd WindEnergie (GL Wind). The company of Germanischer Lloyd is now offering inspection by means of ROPE ACCESS TECHNOLOGY (RAT) to give customers an efficient and economical method for performing a rotor blade survey.
ROPE ACCESS techniques are already firmly established as a flexible and efficient way of working on poorly accessible buildings or industrial plants; in recent years, these techniques have proven their worth throughout Germany, especially for work on towers, chimneys and glass facades.
In view of the rapid growth in turbine sizes – a hub height of over 100 metres is no longer a rarity – the conventional use of truck-based telescopic platforms for rotor blade inspections is reaching its limits.
http://www.gl-group.com/scripts/index_fs.html?content=http:/...
Job Title: Cleaning WIND TURBINES in Canada

Job Details:
6 week contract (until end July) cleaning wind turbine towers in Canada. Must be IRATA.

Please apply ONLY if you have extensive experience working on wind turbines.

Please apply ONLY if you have extensive experience working on wind turbines.

Job Title: 6 month contract in Canada (Quebec)

Job Details:
We are looking for level 2 and 3 technicans for a 6 month contract in Quebec. Work is general ROPE ACCESS, but with specific tasks on WIND TURBINES.
http://www.rigg-access.com/rope-access-jobs-main.asp [A job site for rope-access work]

gym aux agrès (sol/barres/ANNEAUX/...) à 6 ans ? : [#0000ff]Bonjour à toutes et à tous ! En cette période de rentrée, je suis à la recherche ...
forum.magicmaman.com/magic37ans/jeux-jouet-sport-enfant/agres-barres-anneaux-sujet-3660987-1.htm

Les anneaux - Les ANNEAUX sont considérés comme l'AGRES de force de la gymnastique artistique masculine. Les anneaux sont pendus à 275 cm du sol à partir ...
www.aide-gymnastique.com/Les-anneaux

Balançoires et AGRES pour portiques tp, POUR ARBRES et poutres. ... La barre trapèze et anneaux convient à un arbre ou poutre. Balançoire souple ...
www.tpactivite.com/options_balancoires.php

Présence de divers AGRES DONT 2 TYROLIENNES de difficulté moyenne. ... Présence d'une TYROLIENNE montante. Les agrès sont très mobiles et très physiques. ...
www.metabiefaventures.com/public.php?id_article=36

Installations fixes en câble parfois peu respecteuse des sites, grands groupes de participants, successions D'AGRES PERMETTANT DES PASSAGES D'ARBRE EN ARBRE ...
www.arboreale.com/