local component = require("component")
local holo = component.hologram
local term = require("term")
local io = require("io")

function input()
    term.clear()
    term.write("What scale would you like to set the holo to? ")
    local s = io.read()
    return tonumber(s)
end

while true do
    local s = input()
    if s > .3 and s < 3 then
        holo.setScale(s)
        break
    else
        print("Please enter a number between .3 and 3")
        os.sleep(2)
    end
end