Unless a very large room is dedicated specifically for the play gym, a play gym is meant to be used outside. However, there are some smaller play gyms which can be assembled and used inside.
Just about any nylon play tent can be used outside and in the rain.
Patio heaters are meant to be used outside. Using it inside can be dangerous. It should only be used in an open space such as on a patio or porch. It is better to buy a heater that is meant to be used inside.
These shutters can be used inside or outside depending on the climate and coating.
Telescopes are used inside
It is on the outside, because it is used to prevent people from entering the castle. If it was on the inside, there would be no use for it.
Morrison shelters were designed to be used inside your house. Anderson shelters were designed to be used outside in your garden.
Callipers
Inside and outside calipers are used for this.
What material do you mean, the inside or the outside? The inside is made from foam etc, and the outside depends, it is usualy leather or cotton etc... it depends
Travellers Cheques in PKR can be used outside Pakistan as these are available for travel purposes whether inside or outside the issuing country.
No, they are not designed to be used outside and can only be used inside.
rubber