This is a hard-to-find Bruel & Kjaer chart paper roll in unused, new old stock (NOS) condition and is suitable for their level recorder types 2304, ("early") 2305 and 2306.

This chart roll is intended for the recorders when used in conjunction with instrument types 1013, 1017 and 1023 (sine wave generator), 1027 (sine wave & random noise generator), 1611, 1612 and 1615 (Audio Band Pass Filter Sets), 2010 (Heterodyne Analyser) and 2111, 2112 and 2113 (Audio Frequency Spectrometers) and others. 
This information is derived from Bruel & Kjaer catalogues from 1967, 1977 and 1980 and may not be entirely accurate in my view as some of these instruments cover variously 2Hz to 2KHz, 20Hz to 20KHz, 22Hz to 45KHz and 200Hz to 200KHz so please rely on your own knowledge as to which system this type QP 1123 paper roll suits. 

It's 60m long and 126mm wide by 63mm diameter and has a 100mm chart recording height for either a 0-25dB or 0-50dB installed recorder potentiometer range, (see the *images), over the 10Hz to 40KHz logarithmic range and is plain paper, intended for use with a QI 0002 ink pen attached to the level recorder.
NB: *The images are of the other one that I just sold, this one is the same but does not have the yellow wrapping paper.

The condition is new, old stock with no visible cuts or damage or deterioration to the paper
and is from a pet free, non-smoking home.

Weight ~ 370gm

SHIPPING ESTIMATES: (Collection in person is OK if paying in cash)

Home delivery - Royal Mail 2nd class Delivery will be cheapest at £4.50

I will only send this insured, in this case to £50.00 final bid value (FBV), and by means requiring a signature on delivery - see more on this below. But please note that should the FBV end up above £50.00, additional insurance will be payable by the buyer.

No packing charges are added; you just pay what it costs to send it!

 
The small print, but please read it!

NB: This item may be picked up in person if paying in cash, otherwise it will be despatched securely, via a tracked and insured service only, so it will need to be signed for at the delivery address. I will not send it to a PO box, or care of a business address without written acceptance of your liability for loss, theft or damage; the registered address for your accounts within both eBay and PayPal must tally exactly with each other and be the same as the delivery address.

Carriage charges, where indicated, are for UK (zone 1) post codes only. If you are in other zones or are an overseas bidder, you can get an estimate of shipping costs by checking online.
Payment may be by Pay Pal/cheque/postal order/bank transfer or with real money if collecting in person, but please note that I do wait 12 working days before posting items against cheques and 8 against bank transfers on the advice of my bank; PayPal payments ensure prompt postage.

Please confirm your full address when completing the transaction via the eBay and PayPal message system to avoid delays on despatch and supply a landline or mobile telephone number or both; I now fully check identifies and addresses before sending items because of fraud attempts and courier booking requires the telephone number.

I now also reserve the right to cancel a bid from anyone with zero or very low/bad feedback; if you are in this situation, you must provide me with your full details by e-mail prior to bidding to avoid this action, and please remember that this auction is in £ Sterling (GBP) and not $ US or Euros or whatever!
You can also forget it if you think I will fall for money laundering attempts.
All attempts at fraud or deception will be reported and the perpetrator blocked at once!

I will immediately cancel the bids of anyone who has only just joined eBay, (please ask before you bid!), or is bidding from Cambodia or Nigeria, etc. and this includes any winning bids placed at the last second; sorry, but I am fed up with losing fees that eBay will not refund!