By Suunto

Suunto PM-5/1520 Opti Height Meter, Suunto Optical Height Meter (SS011100010)

FREE Standard Shipping (1-6 business days) on all orders. FREE Expedited Shipping (1-3 business days) on $199.99+ orders or Pick-Up in Store 9am-5pm M-F.

Regular price $195.00 USD
Regular price Sale price $195.00 USD
Shipping calculated at checkout.
Brand: Suunto
Availability: Low stock: 5 left
Regular price $195.00 USD
Regular price Sale price $195.00 USD

MEASUREMENT OF HEIGHT

The actual measurement of the height of the tree should be done from the distance measured in the following way: the observer sights the top of the tree with both eyes open. The object sighted, the hair line and the scale will all be simultaneously visible in the instrument`s field of vision. As soon as the hairline coincides with the top of the tree, the tree height can be read off (in this example, from the 20 m scale on the left of the instrument). The reading obtained is the height of the tree measured from the eye level of the observer. The base of the tree remains to be sighted. If this is situated below the eye level of the observer, then the actual height of the tree is obtained by adding the two readings together. If it is above the observer`s eye level, the tree height is obtained by taking the difference between the two readings. In fact, in the latter case the distance cannot be measured horizontally. Thus, to get 13,5 m 3,25 m 10,25 m 20 m 3,5 m 12,5 m 16 m 20 m 6 exactly correct result you have to proceed as stated below. On level ground, the tree top readings is usually sufficient: one only has to add the height of the observer`s eye level (1,60 m in this case), which is already known.

INSTRUCTIONS FOR USE OF NOMOGRAM

If the distance, because of very uneven ground, cannot de determined horizontally as stated above, the nomogram supplied with the instrument should be used.

ESTABLISHING THE BASIC DISTANCE

Because this instrument does not incorporate a prism, the basic distance e.g. 15 m has to be determined using a tape measure along the ground. Take the top and base readings and add or subtract them to get the apparent height. Of the four nomograms on the card, choose the one corresponding the measuring distance. Locate the apparent height on the right hand scale. On the double scale on the left, locate the reading obtained from sighting the base of the tree. Note that readings for falling and rising gradients should be taken from different sides of the scale. Connect these two points of the nomogram with a straight line. The centre scale of the nomogram now indicates the true height of the tree.

We Ship Free
Same or Next Business Day
Buy with Confidence 30 Days Money Back
Payment secure. Secure your payment with our trusted payment system.
Buy on Line Pick-up in Store.

We Ship Free
Same or Next Business Day

 You get FREE Standard Shipping for ALL orders. 

We aim to ship orders placed before 3pm (EST) Monday to Friday the same day, orders placed after this time will be posted next business day. Orders placed on weekends and bank holidays will be posted the next business day. All orders are sent via USPS, or FedEx, or UPS post. Postage is combined for multiple purchases. Please request an invoice for reduced postage. First class and priority mail post should arrive in 2 business days, but this is not guaranteed.

FREE 2nd Day Shipping is valid for $199.99+ orders and is applicable only for 48 continental States (only for Street Addresses, NO PO Boxes or APO/FPO), 2nd Day Shipping is Not applicable to Air Rifles and other large/extra-large items). Proof of postage is always obtained. However, an item is only considered "lost" after 15 working days, please contact us if your item does not arrive. If the wrong contact details are provided any losses incurred as a result will be the buyers responsibility.

Shipping Restrictions by location.

It's up to YOU to know the laws in your state, county and city and to fully comply with them. The following are examples of some state and local restrictions governing various products. This list shows products that are prohibited in the locations indicated. When criteria must be met for ownership, those are also listed.

Unable to ship due to shipping restrictions.

In some situations we are unable to ship an item because our shipping partners require us to restrict it to ground transportation only (the FAA will not allow them to transport it on an airplane).

If you have a restricted item on your order, we can only provide ground shipping options. Sometimes you live in a place that does not have guaranteed ground delivery, and in this instance we are not able to ship the restricted items to you.

You can remove the restricted items if you would like to receive the items on your order that are allowed to be sent via non-ground delivery.

Buy with Confidence 30 Days Money Back

Payment secure. Secure your payment with our trusted payment system.
Buy on Line Pick-up in Store.