import re
regex = r"\b(?:Length|Width|Height|Weight) (?:\.\d{1,2}|\d{1,4}\.?\d{0,2}|\d{5}\.?\d?|\d{6}\.?) (?:in|oz|lbs|VAC|Hz|amps|H\.P\.|kg)(?!\S)"
test_str = ("Width 3.5 in\n"
"Weight 10 kg\n"
"Weight 10 H.P.")
print(re.findall(regex, test_str))
aW1wb3J0IHJlCgpyZWdleCA9IHIiXGIoPzpMZW5ndGh8V2lkdGh8SGVpZ2h0fFdlaWdodCkgKD86XC5cZHsxLDJ9fFxkezEsNH1cLj9cZHswLDJ9fFxkezV9XC4/XGQ/fFxkezZ9XC4/KSAoPzppbnxvenxsYnN8VkFDfEh6fGFtcHN8SFwuUFwufGtnKSg/IVxTKSIKCnRlc3Rfc3RyID0gKCJXaWR0aCAzLjUgaW5cbiIKCSJXZWlnaHQgMTAga2dcbiIKCSJXZWlnaHQgMTAgSC5QLiIpCgpwcmludChyZS5maW5kYWxsKHJlZ2V4LCB0ZXN0X3N0cikp