If you do not receive a response within three days, please send another email using a different return email address. Since about May 2007 many of our responses have been returned as "undeliverable for policy reasons." (This often means that your ISP is not accepting email from our ISP for some reason.) In particular, yahoo.com is rejecting nearly all mail from The Slide Rule Trading Co. If your email address is something@yahoo.com and you haven't received a response from us, it is because yahoo.com rejected the response.
Shipment is at buyer's risk. We
have never had a loss and only one damage claim
but USPS insurance is available:
$1.70 for coverage up to $50, $2.15 for coverage to $100,
$2.60 to $200, $4.60 to $300 plus $0.95
for each additional $100 coverage over $300.